Sapphire Crystal
A watch crystal made of synthetic sapphire, which is a transparent, shatter-resistant, scratch-resistant substance.
Sapphire Crystal
A clear, scratch-resistant covering used on fine watches.
Satin Finish ...
The Sapphire Crystal
The scientific name of a sapphire crystal is called Corundum. A sapphire (corundum) is an aluminum oxide mineral (Al2O3). Its crystal structure is hexagonal.
The sapphire crystals - first found 100 years ago - are uncovered as generally small and/or irregular in shape.
The sapphire crystals appear to be very local in their development, the only spot where they have hitherto been found in situ being near the top of the ridge bounding the northern side of the small valley above mentioned, and about 1, ...
Sapphire Crystal
A timepiece crystal that is crafted of natural or lab-created sapphire, the second hardest mineral on the Moh's Scale of Hardness (diamonds are the hardest).
Burmese sapphire crystal. Photo by crystal-treasure.com
Contemporary History ...
The Ruspoli Sapphire Crystal
133.06 carats sapphire, Paris Museum of Natural History.
The Star of Bombay ...
(1989) Gem News: Huge, doubly-terminated sapphire crystal. Gems and Gemology, Vol. 25, No. 4, Winter, p. 247; RWHL.
Kunz, G.F. (1892) Gems and Precious Stones of North America.
80 carat Ruspoli Sapphire Crystal here
In 1717, The Regent Diamond was sold to Philip II, Duke of Orleans, then Regent of France, for about $650,000; since that time, it has been known as the Regent Diamond.
Color in sapphire often occurs in zones that follow the hexagonal outline of the sapphire crystal. Zones of rich color will alternate with colorless areas. This is particularly characteristic of gems from Sri Lanka.
There are a number of locations between Dillon in Beaverhead County and Ennis in Madison County that produce lavender, grayish-lavender, bluish-gray, and gray hexagonal sapphire crystals that, when cut, ...
Sapphire watch crystal - A watch crystal made from synthetic sapphires. At 9.5 on the Moh's scale, a sapphire crystal can only be scratched by diamonds.
Saturation - A word used to describe the purity of color in gemstones.
Meanwhile, experts in Tanzania have also found initial evidence of two large-scale gemstone deposits in the form of some good, if not very large sapphire crystals coloured blue, green, yellow and orange.
Val-de-Travers region of Switzerland, Michael Parmigiani founded Parmigiani Fleurier in 1996 after a lifetime of exposure to the craft of watchmaking. Their 'Bugatti Type 370 watch (shown in photo) has a fully exposed complication, sapphire crystal, ...
The miners of Bo Ploi must unearth over 50 tons of alluvial soil to extract just one carat of sapphire crystals. Sapphires have been heavily mined from the Bo Ploi mines in the last ten years and are approaching depletion.
Model 6536 then became 6536/1, featuring a chronometer version of the 1030 movement. New Submariner models featured a new scratch-resistant sapphire crystal and an upgraded depth rating of 1,000 feet.
 See also: Sapphire, Crystal, Jewel, Stone, Color
  
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