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Tsarstone collectors guide

Alexandrite guide forums

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I know of at least 7 terms used to call an opalescent variety of chrysoberyl, which are: Chrysoberyl Cat's-eye, Cymophane, Cymophanit, Cymophanita, Cymophanite, Cats eye and Cat's eye.

Which one should I used, why and where?

The common trade name for chatoyant chrysoberyl is cat's eye. or chrysoberyl cat's eye. Chrysoberyl can be chatoyant but not opalescent. Other cat's eyes like tourmaline or kornerupine should be reffered to as tourmaline cat's eye or kornerupine cat's eye respectively while chatoyant chrysoberyls can be designated as cat's eyes without the species name. Cymophane is another name for chatoyant chrysoberyl but is rarely used in the trade.
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Looking for a alexandrite
Hello, I've noticed that most of your alexandrites are from Some time ago I've seen one alexandrite there, I saved a...
Step Cut Alexandrite Oval, 2.6 cts
Step Cut Alexandrite Oval, 3.03 cts
Grading a color change gems?
How do you grade alexandrites ?
Portuguese Cut Alexandrite Round, 1.19 cts
Step Cut Alexandrite Oval, 5.16 cts
Useful tool for beginners
Dedicated Alexandrite search
Emerald Cut Alexandrite, 12.53 ct
Hi everyone! I recently (today!) got from my mom a really nice emerald cut Alexandrite. It was set in a ring she inherited and she wanted...
What gemstones change color like alexandrite?
Several other well known gemstones, including diaspore, sapphire, garnet and spinel may also change color as a function of the light source
Colour changing Kunzite?
Does it mean that kunzite can change color?
Colour change garnet
Colour change in garnet is supposed to occur between morning and late afternoon light
Natural Alexandrite Pear 7.24 cts
Extremely rare Alexandrite (Chrysoberyl) Pear 7.24cts from Tanzania (Tunduru)
Browse gemstones tagged with color change gemstone
beautiful, but am looking for marquise cut
Alexandrite Specimens for collectors
I have 6 stones that I seem to be battling to get valued and i would like to sell. They are not cuttable as far as the jeweller is concerned...
Alexandrite Specimens
I have 6 stones that I seem to be battling to get valued. They are not cuttable as far as the jeweller is concerned but could be good for...
Alexandrite of Brésilia aproximatively 14 carats with another one half smaller of same crystal !!!
Hi everybody, I would like to know how much am lucky ?; My dead grandfather gave to me in succession a natural stone from Brésilia, and...
I was told this was an alexandrite when given to me.
changing colors are deep purple to redish pink, and Blue to Green.


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