chrysoberyl colors

Chrysoberyl (BeAl 2 O 4) is a rare oxide mineral.It most often occurs in shades of yellow to green to brown. Because of alexandrite’s value and rarity, gemstones sold as “alexandrite” refer exclusively to the variety of chrysoberyl exhibiting color change. A very well cut chrysoberyl chock-full of brilliance. Get the item you ordered or get your money back. The gem commonly known as chrysoberyl is a yellowish-green, brownish-yellow, or colorless transparent to translucent mineral that is usually faceted into gems and generally considered a collector's stone. Known as chatoyancy, this effect appears as a bright, narrow slit--similar to the pupils in the eyes of your favorite feline. Stone can contain fingerprints or liquid inclusions and have angular included crystals.Stone might show twinning. Color: Greenish yellow/chartreuse of a medium-light tone, Shape & cut: Square cushion, modified brilliant crown with a step cut pavilion. Subject to credit approval. It’s difficult to call it a particular color because it’s basically a Venn diagram of orange, yellow and dark beige. Rare Natural Chrysoberyl Alex Green Color Loose Gemstone, {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}, Recent sales price provided by the seller.

Typically a yellowish-greenish, faceted chrysoberyl makes an excellent jewelery stone. The time of day also makes a difference – it can appear almost yellow, almost entirely green, and at times even faintly bluish green depending on the light it’s seen in. The alexandrite–chromium doped chrysoberyl (Cr 3 +:BeO.Al 2 O 3) laser is a broadly tunable solid-state vibronic system that operates at wavelengths between 700 and 800 nm.The growth of alexandrite crystals for laser application was begun in the early 1970s, and in 1974 the first alexandrite laser (working in a three-level scheme, as ruby) was put into operation (Morris and … 1.85ct UNCOOKED! Its effects aren’t visible in artificial lights though. To get this out of the way first: while the stone does contain vanadium and while that vanadium is actually responsible for the blue zoning in it, we are not selling it as a vanadium chrysoberyl or at a vanadium price. Unlike most brownish chrysoberyls however, it’s anything but dark or dim – it has plenty of brilliance and stays bright in any lighting scenario. No additional import charges at delivery! Alexandrite is a rare color-change variety of Chrysoberyl that displays different colors in different lighting conditions.

He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Seller assumes all responsibility for this listing. The color of the actual pear fruit comes to mind as a pretty close approximation.

Despite the similarity of their names, chrysoberyl and beryl are two completely different gemstones, although they both contain beryllium. Rare Natural Chrysoberyl Alex Green Color Loose Gemstone. Color: Yellowish green of a medium to medium-light tone. AAA 1.85 Ct. Natural Alexandrite Pear shape loose certified gem stone F 1589. Rare Natural Chrysoberyl Green Color Loose Gemstone, 1.85 Cts Alex Hue" Natural Chrysoberyl Cat's Eye Oval Cabochon Loose Gemstone, CHRYSOBERYL Natural Loose Gemstones Oval Pear & Rare Round Shapes Vibrant Yellow, 0.76 CTS NATURAL CHRYSOBERYL CATSEYE LOOSE GEMSTONE, 4.15 Ct Natural Chrysoberyl Cats eye Burma Green Color Loose Gemstone, 1.85ct UNCOOKED! International shipment of items may be subject to customs processing and additional charges. Most Chrysoberyl gems are yellow, though some are brown, green, or orange.

Regular Chrysoberyl is normally found from a light pastel yellow to a stronger greenish yellow.
Sparkly, and looks green even in incandescent light. It looks best in ambient daylight indoors, where it gains a bit of saturation. This one is none of those things – it’s a bright, lively, well saturated, warm brown stone with yellow and orange components that give it extra life and sparkle. Regular Chrysoberyl is normally found from a light pastel yellow to a stronger greenish yellow. Chrysoberyl is colored by iron, while color change chrysoberyl (alexandrite) is colored by chromium. The diagnostic feature here is the strong iron band centered at 444nm. Loupe clean and lively.

When the mineral exhibits good pale green to yellow color and is transparent, then it is used as a gemstone. is a useful guide in distinguishing Chrysoberyl "Cats Eye" from the Quartz "Cats Eye.

The stone has a nice spread and good enough saturation to ensure it never burns out or greys out. For additional information, see the Global Shipping Program, This amount includes applicable customs duties, taxes, brokerage and other fees. Cat's Eyes color ranges from a golden honey to mint green, with the rich gold colors generally being the most valued. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". Synthetic chrysoberyl is produced by a process called the Czochralski method.Material containing the elements that make up the mineral chrysoberyl (beryllium, aluminum and oxygen) are melted in a platinum crucible along with elements that produce the desired color (in this case, iron).A small chrysoberyl crystal (called a seed) attached to a rod is then dipped into the melt and …
Other offers may also be available. The spread is also excellent, as it looks like a carat face-up but doesn’t pay the price for it (i.e. Color: Yellowish green of a medium tone with a slight brown modifier, Shape & cut: Pear, modified brilliant crown with a modified brilliant cut pavilion, Lab report: A card/brief format lab report is included with the stone.

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