Demantoid Garnet Valuation Report 130666. 3.80-ct demantoid, clarity VVSI, sourced near Karibib, Namibia. Make Offer. © Rob Lavinsky, www.iRocks.com. Most demantoid specimens on the market are small - gemstones larger than 10 cts are very rare. This antique beetle pin, circa 1870, features demantoids and diamonds, red garnets for the eyes, and unparalleled 14k craftsmanship. This specimen features about a dozen demantoids on a fibrous asbestos matrix. 1-312-335-3937. They are highly prized stones for gem collectors, jewelers and jewelry enthusiasts. Buy Demantoid Garnet Fine Rings and get the best deals at the lowest prices on eBay! All of these gems also constitute species distinct from demantoids. Demantoid garnet's value often depends on the presence of horsetail inclusions, which are highly appreciated (and are often used as one of demantoid's identifying characteristics), as well … According to The Guide, fine-quality demantoid of 1 ct. to 2 cts. Some garnets, like demantoid and tsavorite, are more rare in large sizes, so their value goes up significantly with size. “Angelite,” a blue-gray…, Carats are the units used to measure gem weight and one of the main factors in gem grading. Brilliant, oval-cut demantoid with horsetail inclusions, 2.67 cts, 8.27 x 6.81 x 5.71 mm, Ural Mountains, Russia. Demantoid Garnet Valuation Report #130446 (1.80ct, color: 086 - medium Green; very slightly greyish), Demantoid Garnet Valuation Report #130445 (1.47ct, color: 086 - medium Green; very slightly greyish), Demantoid Garnet Valuation Report #107445 (1.60ct, color: 057 - medium light greenish Yellow, very slightly greyish), Demantoid Garnet Valuation Report #107452 (1.15ct, color: 069 - medium yellowish Green; slightly greyish), Demantoid Garnet Valuation Report #107453 (0.80ct, color: 069 - medium yellowish Green; slightly greyish), Demantoid Garnet Valuation Report #130666 (4.32ct, color: 088 - medium dark Green; strong), Demantoid Garnet Valuation Report #130667 (2.79ct, color: 086 - medium Green; very slightly greyish), Demantoid Garnet Valuation Report #130447 (2.03ct, color: 086 - medium Green; very slightly greyish).   |   1; Note; Appraised for $1,940 by Craig Lynch GG, the leading most respected and trusted gemstone appraiser in the USA. * 1.0 ct = 0.2 gr ** Images were taken under open daylight or 4700K light source 4. About Demantoid Garnet About Demantoid Garnet Gemstones. Stones larger than 10 carats are very rare. Demantoid was discovered in Russia in the early 19th century. gem ID checklist tutorial. The demantoid garnet takes its name from its adamantine lustre. It has a beautiful dispersion (rainbow colours) that makes this gem pop. Garnets are hard, durable and brilliant and are valued on carat weight, color, cut and clarity. Historically and currently, Russia has been an important producer of demantoids. Demantoid hasn’t been synthesized, but green glass as well as green yttrium aluminum garnet (YAG), a synthetic garnet, have been used as simulants. Finding stones over 1.5 to 2 carats is rare, and these can be quite valuable. A polariscope examination can help determine if a stone is truly birefringent). Today, demantoids are still desirable, but very expensive, jewelry stones. “Chrysolite” is an archaic term for green to yellow-green gems that has been applied to peridots as well as chrysoberyls and prehnites. Great Savings & Free Delivery / Collection on many items This is the least expensive garnet stone of the market. Malaya Garnet Buying Guide. RHAPSODY 2.05 ctw AAAA Demantoid Garnet and Diamond E-F VS Ring in 950 Platinum 5.63 Grams (5.0) 1 Review Write a Review Was: $2,489.99 Save An Additional 10% Photo © Joel E. Arem, PhD, FGA. Clean, facetable stones command very high prices per carat. 0 bids. Terms of Use An Art Nouveau Demantoid Flower Ring The ring was made in Moscow between 1899 and 1908. Demantoid Garnet and Diamond Halo Ring $1,485.00. Created by: Happy Jewellery. Strong band visible at 4430, cutoff at violet end of the spectrum. Unlike most inclusions which reduce the value of a gemstone, horsetail inclusions can substantially increase the value of a stone. Demantoid Garnet Gemstones have an unusually high refractive index making it more brilliant than … Medium Value: This demantoid garnet has a very poor cut. Privacy Policy SKU: 41078 Locality: Antetezambato Demantoid-Topazolite Mine, Ambanja District, Antsiranana Province, Madagascar Dimensions: 3.8 X 6.3 X 5.0 cm Description: A wonderful example of gem-quality green Demantoid garnet crystals on contrasting white matrix from the Antetezambato Demantoid-Topazolite Mine, Ambanja District, Antsiranana Province, Madagascar. These stones had such exceptional brilliance and dispersion or “fire” that they inspired Nordenskiöld to name demantoid after its “diamond-like” appearance. Certified Gemstones . Most demantoid garnets are small and on average less than 1 carat in size. Used with permission. C $76.81. - Photo by John I. Koivula/GIA Demantoid is notable mainly for its gorgeous colors and "horsetail" byssolite inclusions while the andradite hues are prized for dispersion. Russian Demantoid Garnet. Browse our collection of rare Russian demantoid garnet jewelry from the 1800s and early 1900s.

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