Opal mines in the us

We have gem, mineral, gold & crystal mines & mining claims for sale in the western USA incl South Dakota, California, Nevada & more

Opal mines in the us. The Bonanza Opal Mine is another well-known opal mine in the area. In fact, because of our unique geological history, Bonanza is among the variety of opal mining spots near Winnemucca. Bonanza Opal Mines. The Bonanza Opal Mine is located in Virgin Valley about two hours away. Heading there from Winnemucca, you'll head north on Highway 95 ...

Initial X-ray fluorescence analyses showed barium (Ba) values ranging from below detection limit for one deposit with more crystal-like opal to 1000 ppmw for another deposit with more dense and grayish material. The two deposits are on adjacent sides of the same mountain. The wide range of Ba values confirmed the volcano-sedimentary character ...

Bonanza Opal Mine, Denio, Nevada. Located in the Virgin Valley in Nevada, Bonanza Opal Mine is home to the most prism-esque of gems, the opal. Reflecting the full spectrum of color, these pearly gems can take many gorgeous forms. At Bonanza, you can put on your explorer hat, and dig for fire opals amid beautiful desert scenery.Mintabie Opal Mines . This is the second large place where you can find the Black Opal. It is located in the North-western Coober Pedy, about 350km or 35km Western Marla. ... Us Opal Rock Mining locations Gemstones of Idaho. People often call Idaho "The Gem State." The history of this place spans and is closely linked with the production of ...The Queretaro area, 200 k m northwest of Mexico City, has been producing fine, unusually transparent opal with vivid red and green play of color for over 100 years. These opals occur largely in gas cavities in pink to brick-red, thinly bedded rhyolitic lava flows and are mined in open-pit quarries. After examining thousands of opals from this ... Nestled in northwestern Nevada nearest the tiny town of Denio, Bonanza Opal Mines are found within the storied Virgin Valley Opal area—a ruggedly remote location that is prized for its mysterious and rare Virgin Valley black fire opals, the official gemstone of the State of Nevada . Queensland Opal Mining Fields. The home of Australian Boulder Opal. Queensland produces boulder opal, an unique type of opal which is found attached to a host rock, ironstone. Boulder opal is unique to Queensland, and occurs in deposits in weathered sedimentary Cretaceous rocks in the west of the state. Much opal mining in Queensland is carried ...

However, Nevada is the leading American supplier for opals. On the whole, the United States produces around $90,000 of opal annually. Most of these opals are found in western USA, with many opal mines open to the public. Next, we'll look at the mines dotting the Western regions of the US. Nevada. Can you find black opal in the US? You bet!The Southern Skies Opal mines are located in southern Arizona near the old presidio of Tubac. We do all our own mining and make all our jewelry. VinCent handcuts all our stones. Most of the jewelry on this site is made with sterling silver, but custom pieces can be made with gold as well. This gemstone is totally unique, and is a new exciting ...The Russell's opal mine. 26º44'15.0"S 142º51'31.0"E. The Russell's opal mine is also located on Mount Margaret sheep and cattle station and is only about 60 kilometres (37 miles) from our Mt. Margaret opal mine. The Russell's wasnamed after Albert Russell, an dogger or dingo trapper who worked on Mt. Margaret station for many years.Oregon's Morrow County is the site of a large opal mining operation in an area called Opal Butte. Although these deposits were identified in the 1800s, they were not mined until 1988 when West Coast Gemstones, Inc. began work there. They have located and sold exquisite gems as large as 315 carats. The Opal Butte opals are found in rhyolite ...3. Rainbow Ridge Opal Mine, Nevada. Another famous opal mine in Nevada, Rainbow Ridge is an expensive paid dig site but it may be well worth it for those who can afford it. Rainbow Ridge produces some of the prettiest precious opals in the United States, at least as far as specimens go.The Yowah opal has become very popular, particularly in the USA where designers have been using unique Queensland opal to create amazing pieces of jewelry. Some of the famous Queensland opal fields are: Koroit opal field ... Interesting to read about old opal mines in Queensland that still might have some opal if you want to do fossicking.However, Nevada is the leading American supplier for opals. On the whole, the United States produces around $90,000 of opal annually. Most of these opals are found in western USA, with many opal mines open to the public. Next, we’ll look at the mines dotting the Western regions of the US. Nevada. Can you find black opal in the US? You bet!

The town was officially granted the township in 1917, while opal was discovered in this area around 1885. It serves as a center for the southern Queensland opal industry and is a gateway to multiple historic boulder opal mines. Mining activities in this field all cluster to the west and north-northwest of the town.Welcome to Opal Auctions, the world's leading industry opal website for all your opal requirements. Our verified opal miners and sellers offer opals direct from rough opals, opal specimens and a massive range of opal stones to opal jewelry from all corners of the world. We have over 140 approved opal sellers from over 2 dozen countries. In the early 1900s, several opal mines were established in the Virgin Valley. According to Wikipedia, the largest producing mines of Virgin Valley have been the famous Rainbow Ridge, Royal Peacock, Bonanza, Opal Queen, and WRT Stonetree/Black Beauty mines. These mines have yielded some of the world’s most exceptional opals, with their ... Beginning in the 1970s, mechanized opal mining became prevalent. It usually involves advanced equipment such as Calweld drills for shaft digging and tunneling machines or front-end loaders for horizontal tunneling. Miners use Calweld drills like this one for digging shafts. "Calweld 150-H" by hitchster.Agate, amethyst, garnet, jade, jasper, obsidian, onyx, and opal have all been found in Arizona and used to make gems. The photo here shows several cabochons cut ...There are prominent American opal deposits across the United States, most centralized in the western states. We've put together a complete list of where to find opals in the USA. 1.8M+ REVIEWS | 1000+ NEW GEMS DAILY |

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This is our tenth mine, but our first time mining for opals. We mined the tailing and found some incredible pieces, many of which were full of fire. The tailings at this mine are partially comprised of the virgin dig leftovers, so there's a good potential for treasures to be found. There are mounds and mounds of material to comb through.Animoca Brands, a Hong Kong-based game software company, has announced its partnership with the Opal Foundation to enter the Bitcoin ecosystem, leveraging the Opal Protocol to develop the largest ...Where: Sunstone Public Collection Area, Plush, OR 97637, US (off Route 395 via Highway 20 West) Additional stops: Just south of the Sunstone Public Collection Area on the Nevada side of the Oregon-Nevada border are a couple of opal mines worthy of a visit, namely the Bonanza and Rainbow Ridge Opal Mines. Here, visitors can pay a modest dig fee ...Hello everyone and thank you for your interest! We are Mark and Pam Marriott, we are the currant sole owners of the Bubble opal claim, Rock Dreams LLC. 801-448-8708, 801-604-0364, It is closed to public digging at this time but we will have have Field trips scheduled though out the year advertised on Facebook page: Western Rockhounding, Utah Rockhounding Community and Rockhounding Utah.

Yowah is a small town southwest of Koroit. The name Yowah is from Yowah Creek, where people formed a large horse station in 1872. The small opal field was first discovered around the same time. This mining area is famous for its “Yowah nuts”—precious opal sometimes occurs as the kernel of ironstone nuts.Spencer Opal Mines Located just 60 miles miles Northwest of Rexburg you can find an incredible opal mine! Opals are the second largest contributor to the.A handful of black opal harvested at the world capital of fine black opal, Lightning Ridge. Photo by Vincent Pardieu/GIA. The town of Lightning Ridge, in central northern New South Wales, is widely considered the main source of high-quality black opal. A group of field gemologists from GIA visited Lightning Ridge and the area mines in June 2015.Whilst gem hunting is bound to conjure up images of mining, digging, heavy industry and toil, those of us looking for a more casual experience could simply wait for the sea to wash a little piece of treasure onto the shore. Believe it or not, Baltic Amber can actually be found on the shores of the UK, specifically on the aptly named Amber Coast.Leviathan Peak. ⓘ Leviathan Mine. Pabst, Adolf (1940) Cryptocrystalline pyrite from Alpine County, California. American Mineralogist, 25 (6). 425-431. Amador County. Fiddletown Mining District (Oleta Mining District) River Pines. ⓘ Chrysoprase and Moss Opal deposits. (2005) Mineral Resources Data System (MRDS), US Geological Survey.Gift Shop. The gift shop is where you will find Opal for sale. You can find rough opal, polished opal specimens, opal jewelry, pretty much any thing imaginable to do with opal you can find it here. Also please note that all opal is hand made in America, yes it is hand dug, hand cut, hand polished, and made into opal solids or triplets by hand.The mining. We are open to the public as a fee dig mine each summer from May through September. We offer several ways to experience opal mining in Virgin Valley; tailings digging and virgin ground loads. Check the mining page for current pricing as well as an explanation of the digging options, along with important tips. Mining.Black Fire Opal is one of the world’s most rare & precious gem! It is only found in 2 places on Earth: Virgin Valley, Nevada and Australia. 🌎 Join us on our...However, Nevada is the leading American supplier for opals. On the whole, the United States produces around $90,000 of opal annually. Most of these opals are found in western USA, with many opal mines open to the public. Next, we'll look at the mines dotting the Western regions of the US. Nevada. Can you find black opal in the US? You bet!Fox Cave & Gem Mine – Great for kids. 26897 US-70, Ruidoso Downs, NM 88346. Fox Cave is an ancient cave that was discovered in the early 1900s and has since become a popular tourist attraction. It is known for its natural formations, including stalactites and stalagmites, as well as its gem mining opportunities. Join me for a mini documentary exploring the history behind the first commercial opal mine in the United States. We'll explore why there's opal in Washington...

Oregon's Morrow County is the site of a large opal mining operation in an area called Opal Butte. Although these deposits were identified in the 1800s, they were not mined until 1988 when West Coast Gemstones, Inc. began work there. They have located and sold exquisite gems as large as 315 carats. The Opal Butte opals are found in rhyolite ...

The incredible blue color ranges from a robin's egg blue to black, and has a hardness factor of 6-1/2 to 7, which makes it wonderful for cutting!! Southern Skies premium opal will have red, blue, yellow, green and violet play of color in the stone. Our picture opal is totally unique to the gem world!! Never before seen swirls of different ...Explore the mesmerizing world of opal mining at the Royal Peacock Opal Mine, a true gem in the United States! Join me, your friendly crystal collector, on an...The town was officially granted the township in 1917, while opal was discovered in this area around 1885. It serves as a center for the southern Queensland opal industry and is a gateway to multiple historic boulder opal mines. Mining activities in this field all cluster to the west and north-northwest of the town.Opal Hill Mine has been producing fire agate for many years. The mine claim is privately owned and was open to collecting for a fee. ... Howard gave us a short tour of the mine and an overview of the types of gemstones commonly found there. During the tour we stopped at a site where he was currently working on an agate-bearing vein.Coober Pedy produces the bulk of the world's white opal. The opal mining fields of Coober Pedy lie in the outback of South Australia, Stuart Range, 750 km north of Adelaide. Many of the locals in Coober Pedy prefer to live underground in dugouts where it is cool in summer and warm in winter. Read more about the Coober Pedy opal mining fields.Feb 20, 2017 · A site of gemstone discovery since 1912, the Royal Peacock Opal Mine is best known for the black fire opal, ... United States 41.7862, -119.0998 View on Google Maps Book a hotel on Kayak . Sep 13, 2021 · Where: Sunstone Public Collection Area, Plush, OR 97637, US (off Route 395 via Highway 20 West) Additional stops: Just south of the Sunstone Public Collection Area on the Nevada side of the Oregon-Nevada border are a couple of opal mines worthy of a visit, namely the Bonanza and Rainbow Ridge Opal Mines. Here, visitors can pay a modest dig fee ... On top of the many prime locations where you can find naturally occurring opals in Colorado, you can also pay a visit to our trusted local rock and mineral shops if you want to take home opals. Below are some of our favorites: Allin Gem Rock Shop – 755 Gold Hill Pl S, Woodland Park, CO 80863.

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Australia has the most opal mines and the highest quality of opals in the world. In the Wollo region of Ethiopia, opals are found embedded in a 60 cm (24 in) band of clay sandwiched between volcanic rocks. Miners dig 20 m (65 ft) into the side of a mountain. ... They can also be found in the Northeastern US and Central Europe. 10. Matrix Opal.Apparently, Honduras has the oldest known opal mines of the continent. It is a fact that Honduran opals were well known to Spanish colonialists. Local oral history indicates that Honduran opals can be found in various jewels of European royal houses. This means that although at this moment in time Honduran opals have a marginal presence in the ...In 1887 more opal was found in a gravel pit, nine miles from the town. In 1890 a rabbit trapper named Jack Murray found opal when setting a trap. Since then, the rest is history. Many opal mines have been found in this area. Sheepyards, Grawin, Corcoran, and heaps of other opal mines in the direct area of Lightning Ridge.While you're with us, you can ask about their first-hand experience of our very own opal mines. Opal Minded's opals and jewellery are valued by our own National Council of Jewellery Valuers (NCJV) accredited valuers, who specialises in opal and opal jewellery valuation. This sought-after accreditation coupled with an opal specialisation is ...In Mexico, the opal mines near Zacatecas are famous for their beautiful and clear hyalite specimens. The United States also offers some great hyalite hunting, especially in the states of Arizona and Oregon. ... Pistachio opal is mainly found in the United States, with Oregon being a well-known hotspot for this green gem. 19 Of The …However, Nevada is the leading American supplier for opals. On the whole, the United States produces around $90,000 of opal annually. Most of these opals are found in western USA, with many opal mines open to the public. Next, we'll look at the mines dotting the Western regions of the US. Nevada. Can you find black opal in the US? You bet!At the Australian Opal Centre we have opalised dinosaur teeth, limb bones, back bones, toe bones, claws and pieces of rib, pelvis and shoulder. Most are in grey, black or amber-coloured potch, but some shimmer with colour. In some opal mines you can even look up to see the underside of dinosaur footprints in the roof. PterosaursSome of the most well known crystals to be produces here are opal and star garnet. Jade, tourmaline, zircon and topaz are also found quite readily in Idaho too. As always, if you have any questions, please give us a call at 208-374-5476, and we will be happy to help! At Spencer’s Opal we try to bring the beauty of Opals to life. Our top of the market miners help us mine beautiful opals, just for you. Then they are washed, polished, and cut to make a variety of jewelry and gifts. A site of gemstone discovery since 1912, the Royal Peacock Opal Mine is best known for the black fire opal, ... United States 41.7862, -119.0998 View on Google Maps Book a hotel on Kayak . ….

More Information: Rainbow Ridge Opal Mine. 7. Herkimer Diamond Mines, New York. Try your hand at mining along with a resort-style camping experience. The "diamonds" found at these ground-level mines are actually a hard, two-point clear quartz crystal. They have been given their moniker because of their diamond-like shape.Royal Peacock Opal Mine. This is the best mine you can go to if you love collecting world class black opal specimens. This pay-to-dig mine was opened to the public in 1981 and still produces countless world-class opals each year. The mine is situated in northwestern Nevada, towards the end of the Virgin Valley Road about 35 miles from Denio ...Learn about mining and living underground in Coober Pedy with our informative tour and experienced guides. Visit our museum, enjoy a stone cutting demonstration and journey dep into the earth. See how Coober Pedy residents live with a walk through our underground house and learn all about mining in one of the oldest mines in the town center.Opal mines, Presov: See 17 reviews, articles, and 18 photos of Opal mines, ranked No.3 on Tripadvisor among 35 attractions in Presov. Skip to main content. Discover. Trips. ... I was able to email for information from the US for coming to Slovakia .We were treated very kindly by all staff. The mine was easy to locate using Google maps.Opals usually grow in the cracks and holes of ancient rocks like shale and sandstone. Opals can be found all over the world, but Washington state is proud to have …In the early 1900s, several opal mines were established in the Virgin Valley. According to Wikipedia, the largest producing mines of Virgin Valley have been the famous Rainbow Ridge, Royal Peacock, Bonanza, Opal Queen, and WRT Stonetree/Black Beauty mines. These mines have yielded some of the world's most exceptional opals, with their ...One of the two largest sites for mining the Mexican fire opal, which just so happens to be the "national gemstone of Mexico," is located near Magdalena, Jalisco; a small city located approximately 100 miles east of Vallarta that can be visited from PV during one of the ten hour day tours. Magdalena is in a region laden with igneous rocks ...Year Round (775) 969-3616 In Season (775) 941-0111 Email: [email protected] Bonanza Opal Mines, Inc. 43255 Sagebrush Creek Rd. - Denio, Nevada Open in Google MapsAs far back as 4,000 BCE, humans have treasured opals and mined them in various locations, such as Kenya and Hungary. However, due to an unlikely combination of …Opal prospecting and mining began in earnest around 1907. Rainbow Ridge Opal Mine has been in production for over one hundred years. It has been owned and operated by the Hodson family since 1949. The Roebling opal, one of the more famous opals from Virgin Valley, was mined at Rainbow Ridge in about 1918, and is in the collection of the ... Opal mines in the us, Queensland, Australia has long been known for its rich mineral deposits and thriving mining industry. With the recent announcement of several new mines opening in the region, there..., Australia possesses the majority of the opal pedigree, but a minor proportion of opal is also found in Brazil and the United States. Australia has three main opal fields. The majority of opal is found in the regions of New South Wales, Queensland and South Australia. Opals such as white opals are found in parts of South Australia in Coober Pedy., Chinese buyers have always enjoyed agate stones that have patterns so some Australian boulder opals are in demand if they have a unique pattern. Opalauctions has sold opals to over 147 countries so opals of the world is a fitting name for this unique gemstone. One buyer from Tahiti, a French controlled island in the pacific stated., As always, if you have any questions, please give us a call at 208-374-5476, and we will be happy to help! At Spencer's Opal we try to bring the beauty of Opals to life. Our top of the market miners help us mine beautiful opals, just for you. Then they are washed, polished, and cut to make a variety of jewelry and gifts., 25 Jun 2021 ... Located in the Virgin Valley in Nevada, Bonanza Opal Mine is home to the most prism-esque of gems, the opal. Reflecting the full spectrum of ..., UNITED STATES OF AMERICA. 1893 appears to be the date of discovery of opals at Opal Butte in Oregon, and perhaps the beginning of small opal occurrences in the USA. In 1987 - 88 commercial mining in Opal Butte produced 400 kilograms of precious opal. In 1900 opal was discovered at Panther Creek in Lemhi County Idaho., Oregon's Morrow County is the site of a large opal mining operation in an area called Opal Butte. Although these deposits were identified in the 1800s, they were not mined until 1988 when West Coast Gemstones, Inc. began work there. They have located and sold exquisite gems as large as 315 carats. The Opal Butte opals are found in rhyolite ..., Australian Opal Mines. Opal Boulder Matrix "Lights" 8mm round bracelet 4084 $ 40; Opal Lambina 5mm round bracelet 24cts 5251 $ 58; Opal Andamooka Blue translucent 6mm round bracelet 30cts 6240 $ 90; ... All prices on this website are in US $ Dollars Murray Willis, We have gem, mineral, gold & crystal mines & mining claims for sale in the western USA incl South Dakota, California, Nevada & more, At the end of this trail are two famous opal mines, Nowak's Opal Mine and Barnett's Opals. The very light colored terrain in this canyon consists of volcanic ash. It has yielded many opals over the years. This area used to be BLM land. Back in the day, Barnett's Opals charged $2 a head for a day pass to mine. Currently, rock collecting is not allowed here., Geoffrey Weller says opal mining is a fever. (ABC Rural: Melanie Groves) Most days, 74-year-old Geoffrey Weller climbs down a ladder, descending through fifteen metres of red rock down a narrow ..., It has yielded countless world-class precious opal specimens during that time. Digging isn't cheap, though. They charge $190 per person per day to dig in the fire-opal-rich bank area and $75 to dig in the mine dumps and tailings (piles of rock extracted from the mine). Address: 10 Virgin Valley Rd, Denio, NV 89404 Bonanza Opal Mine, Mintabie Opal Mines. Mintabie Opal Mines are one of the main sources of Black Opal along with Lightning Ridge. Mintabie is situated about 35 km west of Marla, or 350 km northwest of Coober Pedy. This mine field was discovered in the 1920s and it gained its status as a commercial field in the 1980s, due to an increase in good Opal production., Kokopelli Opals is an opal mine in the Virgin Valley of Nevada where you can find the black opal. We offer a fee dig for those that want to mine their own opals. We also mine, design and sell our rough opal, gems and jewelry online and at gem shows. , We have gem, mineral, gold & crystal mines & mining claims for sale in the western USA incl South Dakota, California, Nevada & more, Jan 6, 2016 · The Old Timers Mine and Museum, Tom’s Working Opal Mine, or the Umoona Opal Mine and Museum are worth visiting to see opal fossils and opal seams, and get an understanding of the mining process ... , 2. Opal Hill Mine: This mine is situated in the rugged desert landscape near the town of Palo Verde, Arizona. It is a fee-dig mine where visitors can pay a small fee to access the digging area. While opals are not as abundant here as in other locations, I've heard stories of lucky miners finding some beautiful specimens., The Hidden Fire Opal Mine, also known as the Louisiana Opal Exchange Mine, is a real gem located in Vernon Parish. It’s nestled about 15 miles east of the Toledo Bend dam, not far from a place called Monks Hammock. ... Reach out to us with your questions! We always love to hear new suggestions and answer any questions you …, Whilst gem hunting is bound to conjure up images of mining, digging, heavy industry and toil, those of us looking for a more casual experience could simply wait for the sea to wash a little piece of treasure onto the shore. Believe it or not, Baltic Amber can actually be found on the shores of the UK, specifically on the aptly named Amber Coast., SUBSCRIBE!: http://bit.ly/1G97GmASHARE THIS VIDEO: https://youtu.be/HX5zF8b7XKENickipedia Live Website: http://www.NickipediaLive.comScience Team! I love h..., The standard methods of mining for opal include a range of techniques and processes, each suited to different geological conditions and the depth at which diamonds are found. Here are the standard methods commonly used in diamond mining: Trench Searching. Opal Divining. Open Cut (Open-Pit Mining), This clickable map has information about gems, minerals, and fossils in the United States. There are many locations throughout the country that have very valuable sources of minerals such as opals, turquoise, jade, tourmaline, amethyst, and beryl. Even precious gems like diamonds, emeralds, and aquamarine can be found in the U.S. By clicking on …, Here are some of our favorite places in the area to look for and buy opal: Ancients of Days – 127 N Main St, Roswell, NM 88203, United States. Chimayo Rocks – 225 N Paseo De Onate, Española, NM 87532, United States. La Tierra Mineral Gallery – 124 Bent St, Taos, NM 87571, United States., Fee mining sites are places where you can pay a fee to dig for rocks, minerals, gold or gemstones and keep whatever you find. There are many places in the United States where you can pan for gold and have a reasonable chance of finding some. There are also places where you can find ruby, sapphire, opal and many other gemstones., The Royal Peacock Opal Mine, located in Denio, Nevada, has been a family-run business since 1981, offering a unique and exciting experience for treasure-hunters and families alike. With a rich history of opal mining, the mine has produced world-class precious opal specimens, including the famous Gingko Log, one of the largest opals ever found., Overall, the procedures involved in mining cryptocurrency can be complex and technical. But, the concepts surrounding the activities are reasonably straightforward, as is the proce..., The Opal Industry Is Built on the Backs of these hard working Opal Miners in the Outback Of Australia.Opal cutters rely on rough opal from these fields to se..., The opal mine is very nice, but small and very simple. Don't look at the colorful photos on the website. There are no opals in it. Several small pieces of rock with opal inclusions are laid out in one niche for display. The guide talks about the history of the mine and the life of the miners., The important opal mining areas in Australian opal production over the last century have been White Cliffs, The Queensland Fields, Lightning Ridge, Grawin & Glengarry, Coober Pedy, Andamooka, Mintabie and Lambina. Commercial mining commenced in the late 1880's at the White Cliffs Field in New South Wales., The United States. Nevada. Humboldt. Deposit #USGS10295620; Rainbow Ridge Opal Mine Humboldt, Nevada. 41.7954°N 119.0146°W Overview Semiprecious Gemstone ; Location 1 Aliquots; ... Mine Overview. The Rainbow Ridge Opal Mine is located in Humboldt, Nevada, specifically in the Virgin Valley Mining District, which has a rich historical ..., U.S. Gemstones: A diversity of gemstones are produced from mines throughout the United States. Top row: malachite and azurite cabochon (Arizona), a rough ruby (North Carolina), a faceted orange sunstone (Oregon), a teardrop variscite cabochon (Utah). Second row: a Vesuvianite cabochon (California), a freshwater cultured pearl (Tennessee), a ..., Many opal mines are located in remote areas, so be prepared to camp and bring all necessary food. Visitors can camp near the mine and hotels are less than 30 miles from Virgin Valley. Address : 10 Virgin Valley Rd, Denio, NV 89404, The most spectacular black opals in the world come from the Royal Peacock Opal Mine in Virgin Valley, Nevada. Virgin Valley opals are found in layers of clay that were formed when volcanic ash ...