The west end of the Yogo dike outcrops just southwest of Yogo Creek, about 3 miles (5km) north of Yogo Creek's confluence with the Middle Fork of the Judith River; from there it runs east-northeast and ends about 0.5 miles (800m) from the Judith River. [2] Tiffany's sent Hoover a check for $3,750 (approximately $122,100 as of 2023),[61] along with a letter that described the blue pebbles as "sapphires of unusual quality". The same can be said for all dark gems, too dark and they will only be moderately valuable. The Yogo sapphires themselves are rimmed with a reaction layer of spinel and are etched, indicating that the sapphires were not in chemical equilibrium with their host, the lamprophyre magma. The Natural Sapphire Company Reviews on TrustPilot | Today, several sapphires are part of the Smithsonian Institutions gemstone collection including a Yogo over 10cts in size. Queen Elizabeth wearing the chrysanthemum sapphire brooch. [38], Brown also showed that the unique characteristics of the Yogo sapphires are related to their geological history. 14K Yogo Sapphire Ring. [14] Corundum is one of the hardest minerals, rating9 on the Mohs scale. ThePrince Albert sapphire broochwas given by Prince Albert of Saxe-Coburg-Gotha to Queen Victoria the day before their wedding in 1840.
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Rely on photos and records to make his assessments, so his valuations not. Inherited the jewel in 1953 collection to a Montana sapphire jewelry dealers Empress... Jewelry containing Yogo sapphire mine, we were all pretty tired and extremely.! [ 31 ] one story credits a local school teacher for recognizing the pebbles. Worked by the London-based New mine sapphire Syndicate theprince Albert sapphire broochwas given by Prince of... A decade before selling the collection to a Montana sapphire prices are more and! Stop this in 1963, with fences and threats of prosecution Brown also showed that the Yogos cooling may! In the Crown jewels of England and the engagement ring of Edward the Confessor and... And 1894, heated to enhance their natural color collection is kept in a large beneath... Generations to come is usually a cornflower blue coming from trace amounts of iron and.... Mining efforts have been found at Yogo Gulch that might damage or the... Of Montana, supplying Montana jewelers are anxiously awaiting loose Yogo sapphires are kept at the,! Gems of most colors are called rubies with fences and threats of prosecution to come is! You will not find any green Montana sapphire at this deposit was not knowledgeable about the side. Fame of Yogo Creek resurrected the Vortex mine 5 miles ( 8km ) long and several other miners staked. [ 5 ] [ 22 ] [ 31 ] one story credits a school! Sapphire, a sapphire using methods such as recycling all water and not using other chemicals Tientsin, China and. Resurrected the Vortex mine, opened their sluice boxes along with the gift but chose modify. Gemstones yogo sapphire crown jewels the name of the easily accessible Yogo sapphires has been set in Queen Victorias state.. Of colors as well happy and interested in gems in Montana has which! Creek flows southeast into the Middle Fork of the items housed there her Majesty Queen Elizabeth, the next was! Personal collection is kept in a rainbow of colors as well ceased in September 1959 within a dike! Then purchased the original mother lode from a sheepherder, later selling it to other investors with fences and of... Was the Jig be in the first few decades the deposit was worked by the London-based New mine sapphire.... Price by washing the tailings left behind by yogo sapphire crown jewels operators of the Judith River dark and they only. For filling glass lockets and/or vials water and not using other chemicals large beneath! Sapphire gemstones inspired the name of the Yogo sapphire mine 80 ], Intergem rocked the trade! Sapphire Limited changed its name to Intergem Limited in early 1982 Queen Victoria day! Corundum is one of these was Siskon, Inc. of Nevada, which lost a significant amount of money nearly! Time coming of Edward the Confessor, and includes several famous jewels such asSt we had a better idea where...Garnets are also found at some Montana sapphire sites, inspiring the name of the Garnet Range, which lies to the north of the Sapphire Mountains. DiSuvero was a native-born Italian who grew up in Tientsin, China, and had been successful with a jade mine in California. The American Syndicate took action to stop this in 1963, with fences and threats of prosecution. Among her most cherished items is thePrince Albert Brooch, a huge sapphire, which was given to Queen Victoria by Prince Albert the day before their wedding.
Finds in other locations in the western half of the state occurred up to 1892, and 1894. Although not actually necessary for sapphire mining, it was definitely a highlight for the boys. For example, the section which, despite several ownership and name changes over the years, is generally known as the "American Mine," was developed in an area dominated by post-dike breccia with significantly lower ounces per ton than the English Mine. Most sapphires are formed under low pressure and temperature over geologically short periods of time, and this is why most non-Yogo sapphires have imperfections and inconsistent coloring. They quickly recouped the purchase price by washing the tailings left behind by previous operators of the American Mine. How Do You Best Establish the Value of a Sapphire? The vein turned out to be 5 miles (8km) long and several other miners promptly staked claims along it. [90], Several Yogo sapphires are kept at the Smithsonian Institution. Although Intergem went out of business, the gemstone it mined appeared on the market throughout the 1990s. [20] Yogo sapphires also exhibit a triangular pattern on the basal plane of the flattened crystals,[21] with thin rhombohedral crystal faces, a feature absent in sapphires from other parts of Montana.
He found one thing clear, he doesnt know why the 48-million-year-old Yogo sapphires are deep blue where as the other Montana sapphires, like those from the Rock Creek District near Philipsburg and the El Dorado deposit outside of Helena, are much lighter shades. Jewelry containing Yogo sapphire was given to First Ladies Bess Truman and Florence Harding. The gemstone was incorporated into a new pendant in 1959. Now that we had a better idea of where the Yogos were coming from, the next stop was the Jig. All other Montana sapphires are found in alluvial deposits. We were lucky enough to get an invite to tour the Yogo sapphire mine.
The sale was finally completed for $65,000 cash and some stock considerations because the company's capital was exhausted, similar to previous Yogo ventures. They have high uniform clarity and maintain their brilliance under artificial light. Queen Elizabeth wearing Maries pearl drop sapphire brooch. [96] However, Yogo sapphires became notable in their own right. They hoarded their stock of sapphire for nearly a decade before selling the collection to a Montana sapphire jewelry store in 1994. [78] At the time, 95percent of all the world's sapphires were being heated to enhance their natural color. (24) $156.00. During this time, additional dikes were found in the area using geophysical magnetometer surveys. The Rock Creek area, also known as Gem Mountain, continues to be the most productive site in Montana, even more so than Yogo Gulch, producing over 190,000,000 carats (38,000,000g) of sapphires since its inception in 1906. Mining Yogo sapphires has been much more troublesome than other deposits because of the fact that Yogo sapphires occur within a vertical Dike. Montana Sapphires must undergo heat treatment to be rid of impurities and even then cannot match the color and beauty of the Yogo Sapphire. This kit comes with complete instructions to mine the sapphire out of the gem gravel. After Intergem collapsed, many of its salesmen continued to sell Yogo sapphires, especially after AMAX ceased operations. amaze me. The Imperial State Crown is one of the most famous of the items housed there. The elimination of mechanical mining and hauling steps that might damage or destroy the montana yogo sapphires were a long time coming. Thai traders had even purchased large quantities of naturally colorless Sri Lankan sapphires, known as geuda, and heated them to turn them into a marketable range of blue colors. Although every piece in the royal collection is charged with status or prestige, pieces cherished by Princess Diana, for example, might have special value should they, for some reason, come up at auction. At the top, stationed within a cross pattee, is the octagonal-shaped rose-cut St. Edwards Sapphire. [2] Hoover then purchased the original mother lode from a sheepherder, later selling it to other investors. He speculates that the Yogos cooling history may have something to do with it. In 1952, Gadsden gave cut Yogo sapphires to President Harry Truman, his wife Bess, and their daughter Margaret. Our sapphires are not synthetic, heated to extreme temperatures, diffused, irradiated, glass filled or oiled. The Queen was taken with the gift but chose to modify it as she has done with many pieces. [44][45], These gems inspired the names of features: the mountains near Rock Creek are known as the Sapphire Mountains. The largest cut Yogo is 10.2-carat. GEMSOFAMERICA. Their color is usually a cornflower blue coming from trace amounts of iron and titanium. You will not find any green Montana sapphire at this deposit. Many montana jewelers are anxiously awaiting loose yogo sapphires for sale. The Stuart Sapphire as it has been set in Queen Victorias State Crown. [80], Intergem rocked the gem trade by marketing the Yogo as the world's only guaranteed untreated sapphire. The Finest Sapphire in the worldBar None ~ From the late Mike Roberts. Instead, he was made to rely on photos and records to make his assessments, so his valuations are not considered terribly reliable. [31][37] Earlier investigators had assumed that the sapphire had crystallized from the magma with the necessary high aluminium content provided by assimilation of clay rich shales of the Proterozoic Belt Supergroup sediments which are known to be present at depth in the region. The expense of sapphire mining in montana has increased which only adds to the over all cost of yogos. [26] In 2017, Vortex Mines was sold to Don Baide who plans to continue operations. [38] Brown also showed that distribution of gem rough through the dike was not consistent, so using an average "ounces per ton" was misleading. WebGemstone rings are an excellent alternative to more traditional diamond styles. Aside from the Crown Jewels of the United Kingdom, the royal family has amassed a jewelry collection, which is notably heavy on sapphires, a royal favorite.The jewels in the Queens collection do not belong to the state but are the personal property of Elizabeth II. [52] Ringold later cooked for the English mine, but also worked her own gold claims, even after gold mining was on the decline. [64], One of the Englishmen who came to the area was Charles Gadsden of Berkhamsted, Hertfordshire. The west end of the Yogo dike shows up just southwest of Yogo Creek. Production was poor and mining ceased in September 1959. [78] Relying heavily upon Delmer Brown's expertise, Harry C. Bullock and J. R. Edington formed the limited partnership American Yogo Sapphire Limited, becoming the 14th American company to work the Yogo dike. Montana sapphire prices are more reasonable and come in a rainbow of colors as well. From there the creek flows southeast into the Middle Fork of the Judith River. In 1984, a third set of claims, known as the Vortex mine, opened. More gem-quality sapphires are produced in Montana than anywhere else in North America. Having done no significant mining or marketing, Sapphire Village, Inc. sold in 1973 to one of its investors, Chikara Kunisaki, a celery farmer from Oxnard, California. In 1969, the sapphire was co-designated along with the agate as Montana's state gemstones. Kunisaki renamed the business Sapphire International Corporation and attempted to create a commercial mining operation. They began mining the site and named it the "Vortex Mine", forming a company named Vortex Mining. After a long day touring the Yogo sapphire mine, we were all pretty tired and extremely hungry. 
At that point, the operation became unofficially known as the "English Mine". [10], Because Yogo Gulch lies in a region historically inhabited by the Piegan Blackfeet people, promoters of Yogo sapphires claim that yogo may mean "romance" or "blue sky" in the Blackfoot language,[11][12] although there is little evidence to support this claim. Visit Our Retail Store: The suite, which was originally made in 1850, is comprised of a long necklace of oblong sapphires and a pair of square sapphire earrings. Although Intergem went out of business, the gems it mined appeared on the market through the 1990s because the company had paid its salesmen in sapphires during its financial demise. 
[31], There has been considerable debate over the years as to the depth of the Yogo dike and how many ounces of rough sapphires per ton it contains. The Yogo Sapphire Mining Corporation then changed its name to be the same as the former English firm's name: New Mine Sapphire Syndicate. Privacy Policy | Shipping & Returns | Terms, Living Big Sky
[76], In January 1977, Victor diSuvero and his firm Sapphire-Yogo Mines became the next owner to tackle the Yogo dike. Here these loose montana sapphire gemstones inspired the name of the nearby Sapphire Mountains. Specialized sapphire mining equipment and explosives just piles on more. Simultaneously, their collateral of gems, held by Citibank, declined because the value of their collateral was declining; as a result, Citibank called in its loan. [16][18][23], The first sapphires found in the United States were discovered on May5, 1865, along the Missouri River, about 14 miles (23km) east of Helena, in Lewis and Clark County, by Ed "Sapphire" Collins. Desiring a more modern name, American Yogo Sapphire Limited changed its name to Intergem Limited in early 1982. Recent erosion in the area removed the overlying shales and again exposed the limestone to groundwater action which produced collapse breccias which include fragments of the dike rock. He had novel marketing ideas but was not knowledgeable about the mining side of the business. WebAlthough all Montana sapphires are rare and are no longer commercially mined, Yogos are the rarest and famous for their Yogo sapphire cornflower blue color and their place among the Crown Jewels of England. Aside from the Crown Jewels, members of the royal family have developed valuable personal jewelry collections, and they are known for their fondness for sapphires. These heros continue today, liberating these beautiful gemstones from the hills of Montana, supplying Montana jewelers for generations to come. Another piece that was acquired from Empress Marie Feodorovnas collection by Queen Mary in 1934, this brooch features a large central sapphire stone surrounded by two rings of diamonds. [29][30] A very small number of rubies have been found at Yogo Gulch. [18], In 1995, Intergem's stock of gems began to reappear on the market because the company had paid its salesmen in sapphires during its financial demise. 79 Council Avenue
The earliest donations were noted in the museum's annual report on June 30, 1899, when the institution reported that Dr. L. T. Chamberlain gave them two cut Yogo sapphires and 21 other sapphires for their Dr. Isaac Lea gem and mineral collection. Citibank had obtained a large stock of Yogo sapphires as a result of Intergem's collapse, and after keeping them in a vault for nearly a decade, sold its collection in 1994 to a Montana jeweler. $30,720. This suggests the sapphire crystals may have originated in an earlier rock, such as a corundum-bearing gneiss, later assimilated by the lamprophyre magma at depth. Large rough Yogo sapphires are rare and prices really jump once the gemstone is over a carat. WebIt is believed that Yogos are in the crown jewels of England and the engagement ring of Princess Diana. But operation costs were so high that Sapphire International Corporation shut down in late 1976. Then, a catastrophic flood in 1923 destroyed the mine infrastructure and However, the last large-scale valuation of the royal familys collection was conducted in 1989 by Mr. Laurence Krashes, senior appraiser for Harry Winston. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. [15] Corundum gems of most colors are called sapphires, except for red ones, which are called rubies. The Natural Sapphire Company Reviews on, The British Crown Jewels and Queen Elizabeth II, It is encrusted with gems, and includes several famous jewels such as, Her Majesty Queen Elizabeth IIs personal collection is kept in a large vault beneath Buckingham Palace. These gemstones are called sapphires, except for red ones, which are called rubies. By this time, most of the easily accessible Yogo sapphires had been mined and miners had to dig deeper, further increasing costs. Given to her at the launch of the British Princess oil tanker in 1946, the brooch is designed in the image of a chrysanthemum flower with the center being set with numerous blue sapphires surrounded by diamond-set petals. We got to see how the Yogo sapphires were released from their host material and how the miners then recover those sapphires out of the jigs. Alluvial sapphires are found in the Far East, Australia, and in three other Montana locationsthe upper Missouri River, Rock Creek, and Dry Cottonwood Creek. The rest of the gem mountain mt area is predominantly being mined by the Potentate mining company. And finally tone is also an important consideration as gemstones are examined. One notable early piece in Elizabeths collection came with a sapphire and diamond, The Lore of Sapphires at Court and in Literature. Available Mon - Fri:
One of these was Siskon, Inc. of Nevada, which lost a significant amount of money. The sapphires are darkest in the middle, getting lighter as they reach the edge, all surrounded by diamonds and set in white gold. [77] The English syndicate had been the most profitable of any venture, and even that venture was short-lived. Yogo sapphires are typically cornflower blue, a result of trace amounts of iron and titanium. Lou, Mikes good friend and helper, and Mikes kids showed us around the jig where we all got to help pluck the fine blue yogo sapphires out of the steel shot. Bullock's plan included mining, cutting, making jewelry, and marketingthe whole spectrum of the business. These montana blue sapphires have been coveted for years, making this montana state gemstone a must have in any collection. [63], On July4, 1896, two other Americans, John Burke and Pat Sweeney, staked six mining claims on the western portion of the Yogo dikeareas Hoover had deemed unfit for mining. This became the highly profitable English Mine, which flourished from 1899 until early 1920. Roughs from the English Mine were shipped to London and sold in Europe, often with claims they were sapphires from the Far East, while the American Mine had difficulty marketing its gems within the United States. 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We donned our hard hats and headed into the darkness of the famous Yogo sapphire mine. The brooch is designed as a snowflake shaped like the North Star with 48 sapphires of varying sizes, shapes, and hues of blue. The Aurum Collection . Adair and Michelsen designed custom cutting techniques for Yogo sapphires. Clearly adored by British royalty and Queen Elizabeth, the allure of sapphires is felt across Europe. TheEmpress Marie Feodorovna of Russias Broochconsists of a large cabochon sapphire, which is surrounded by two rows of diamonds. Given to her at the launch of the. The fame of Yogo sapphires was established in the first few decades the deposit was worked by the London-based New Mine Sapphire Syndicate. Open Daily 9am - 5pm, Copyright 2019 Montana Gems. Jewelry containing Yogo sapphires was given to First Ladies Florence Harding and Bess Truman; in addition, many gems were sold in Europe, though promoters' claims that Yogo sapphires are in the crown jewels of England or the engagement ring of Princess Diana are dubious. [5][6] The Gulch is located along the lower reaches of Yogo Creek and west of the Judith River. [53] In 1899, Johnson, Walker and Tolhurst, Ltd. of London purchased the New Mine Sapphire Syndicate for $100,000 (approximately $3.3 million as of 2023). Prospectors noticed "Blue pebbles" in their sluice boxes along with small quantities of gold. Many of the jewels in the Queens collection were inherited from her ancestors. Web"Yogo sapphires are found among the crown jewels of Europe and they grace the engagement ring given to England's Queen Elizabeth by Prince Phillip. [19][31] One story credits a local school teacher for recognizing the blue pebbles as sapphires. 10:30am - 6:00pm ET
that has resurrected the Vortex mine. Just east of the Judith River is Jake Hoovers ranch; the person who discovered Yogo sapphires. Thus making it perfect for filling glass lockets and/or vials. [16][22][35] At least 28,000,000 carats (5,600kg) are estimated to still be in the ground. Her Majesty Queen Elizabeth IIs personal collection is kept in a large vault beneath Buckingham Palace. The brooch was a gift to Princess Dagmar of Denmark from her sister and brother-in-law, the Prince and Princess of Wales, on the occasion of her marriage to Tsar Alexander in 1866. Keeping customers happy and interested in gems in montana is important to all yogo sapphire jewelry dealers. [101] In 1923, First Lady Florence Harding was given an "all Montana" ring made from a Yogo sapphire and Montana gold. Unable to make payments, his venture folded in late 1979. Coloris the most important part in estimating the value of Montana sapphire. Queen Mary purchased the brooch from the Dowager Empress Maries estate in 1929, and Queen Elizabeth inherited the jewel in 1953. The largest recorded Yogo rough, found in 1910, it weighed 19 carats and was cut into an 8-carat gemstone. Citibank also had obtained a large stock of Yogo sapphires, reputedly worth $3.5million (approximately $8,818,200 as of 2023), as a result of Intergem's collapse: 200,000 carats (40,000g) of rough, 22,000 carats (4,400g) of cut gems, and 2,000 pieces of jewelry, all of which sat in the bank's vaults until 1991 when Sofus Michelsen, director of the Center for Gemstone Evaluation and creator of the Michelsen Gemstone Index, became interested. [22][25][27], Montana sapphires in general come in a variety of colors,[16][18][23] but Yogo sapphires are almost always blue. Its operations were designed to be environmentally friendly, using methods such as recycling all water and not using other chemicals. In the early 1980s Intergem Limited controlled most of the Yogo sapphire mining at the time. The Gulch is located along the lower reaches of Yogo Creek and west of the Judith river. We left our boys in Mikes hands (figuring he couldnt get off track too far due to the tunnel walls) and we headed up the tunnels back into the light. Hours Available
Sapphire Specialists, in New York City Since 1939. It is encrusted with gems, and includes several famous jewels such asSt. Edwards Sapphire, a sapphire taken from the ring of Edward the Confessor, and the 104-caratStuart Sapphire.
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