|Dimensions (mm)||not provided|
|Weight (carats)||not provided|
Most details shown in the large image are actually not visible to the naked eye, large photographs are meant to show details. We have made the image the closest possible to the original item when viewed on computer screen. Depending on the viewers' monitor settings, the colour of the item may appear a few shades lighter or darker in comparison to the original item.
Extremely rare large faceted Scheelite from China. Among the rarest gems of the world, very rarely seen as faceted gem. Valuable collector's stone!
When the Chinese deposit of Scheelite was first discovered, specimens and cutting rough were readily available and at a reasonable price. Now with the deposit exhausted, specimens have sky rocketed in value and rough is almost impossible to find.
Despite its low hardness (limited use in jewelry), scheelite has been faceted as a gemstone for collectors. Its high refractive index and adamantine luster assure bright and surprisingly attractive gemstones. Scheelite is well known for the strong bright blue fluorescence it exhibits under short wave ultra-violet light. It is practically inert under long wave UV.
Yellowish to brownish but sometimes almost orange-yellow in color, the calcium tungstate mineral scheelite is an important ore of tungsten. Scheelite was named for the discoverer of tungsten, K. W. Scheele, the Swedish chemist who proved the existence of tungsten in the mineral.
PRODUCT : CERTIFIED Natural Scheelite
QUANTITY : 1
WEIGHT (ct) : 22.83 carat
SIZE (mm) : 15.4 x 14.2 x 9.1 mm
COLOR : Yellow
SHAPE : Triangular
CLARITY : I
TREATMENT : NONE
HARDNESS : 4.5 - 5.0
ORIGIN : China
IF Free of inclusions under a loupe with 10x magnification
VVS Microscopic inclusions barely seen under a loupe with 10x magnification
VS Very slight inclusions visible only to the scrutiny of the close naked eye
SI Small inclusions easily seen to the close naked eye
I Heavy or large inclusions obvious to the naked eye
Transparent Transmitting light without serious diffusion / may have rutile or other inclusions
Translucent Allowing light to pass through, but not transparent
Opaque Does not allow light to pass through
Weight and size of gemstone/item may vary slightly from piece to piece due to difference in calibration of our weighing and measuring scales compared to those used by buyers.
Colour may also not appear exactly as in real life due to variation in computer monitor resolution and lighting used during photo shooting. Our photos are taken under fluorescent lighting; sometimes Torch Light and Flash Light are also used. We will do our very best to represent the accurate pictures of all our items.
The Verified Seller has provided accurate and complete information for this gemstone including weight, dimensions and treatments where applicable.
|Starts||2nd Dec 2016 8:57am PST|
|Ends||3rd Dec 2016 8:55am PST|
|Standard Shipping||$0.00||21 Days|
|Shipping Insurance all providers $0.00 (optional)|