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Alexandrite

Tsarstone collectors guide

Alexandrite guide forums

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<![CDATA[There are no international standards to grade the strength of color change in alexandrite and the better labs may use master stones to grade the strength of a color change. Most labs use something like strong, moderate, or weak to describe the strength of a color change. For color grading, the GIA system is the most convenient and they offer a program called something like gem Ewizard that is useful. There is some variation as a function of the monitor you are using. Although the system is not perfect, it is the best practical system to grade colored gemstones and we use it. ]]>
<![CDATA[Hello everybody,

I am looking for the color grading manual. How do you describe alexandrite colors? Are there any grading specifics or rules? How should I evaluate alexandrite color change?

Thank you
David
]]>
Topic page 1 of 1
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Looking for a alexandrite
Hello, I've noticed that most of your alexandrites are from multicolour.com. Some time ago I've seen one alexandrite there, I saved a...
www.alexandrite.net/discussion/topic/looking-for-a-alexandrite-FRM-133
Cymophane or Cats eye?
What is the correct name and why?
www.alexandrite.net/discussion/topic/cymophane-or-cats-eye-FRM-164
Step Cut Alexandrite Oval, 2.6 cts
http://www.alexandrite.net/viewpage.html?id=ALX-001-00026
www.alexandrite.net/discussion/topic/step-cut-alexandrite-oval-2-6-cts-FRM-165
Step Cut Alexandrite Oval, 3.03 cts
http://www.alexandrite.net/viewpage.html?id=ALX-001-00023
www.alexandrite.net/discussion/topic/step-cut-alexandrite-oval-3-03-cts-FRM-166
Portuguese Cut Alexandrite Round, 1.19 cts
http://www.alexandrite.net/viewpage.html?id=ALX-001-00030
www.alexandrite.net/discussion/topic/portuguese-cut-alexandrite-round-1-19-cts-FRM-168
Step Cut Alexandrite Oval, 5.16 cts
http://www.alexandrite.net/viewpage.html?id=ALX-001-00003
www.alexandrite.net/discussion/topic/step-cut-alexandrite-oval-5-16-cts-FRM-169
Useful tool for beginners
Dedicated Alexandrite search
www.alexandrite.net/discussion/topic/useful-tool-for-beginners-FRM-172
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...
www.alexandrite.net/discussion/topic/emerald-cut-alexandrite-12-53-ct-FRM-173
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
www.alexandrite.net/discussion/topic/what-gemstones-change-color-like-alexandrite-FRM-282
Colour changing Kunzite?
Does it mean that kunzite can change color?
www.alexandrite.net/discussion/topic/colour-changing-kunzite-FRM-336
Colour change garnet
Colour change in garnet is supposed to occur between morning and late afternoon light
www.alexandrite.net/discussion/topic/colour-change-garnet-FRM-342
Natural Alexandrite Pear 7.24 cts
Extremely rare Alexandrite (Chrysoberyl) Pear 7.24cts from Tanzania (Tunduru)
www.alexandrite.net/discussion/topic/natural-alexandrite-pear-7-24-cts-FRM-354
Browse gemstones tagged with color change gemstone
beautiful, but am looking for marquise cut
www.alexandrite.net/discussion/topic/browse-gemstones-tagged-with-color-change-gemstone-FRM-355
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...
www.alexandrite.net/discussion/topic/alexandrite-specimens-for-collectors-FRM-372
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...
www.alexandrite.net/discussion/topic/alexandrite-specimens-FRM-373
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...
www.alexandrite.net/discussion/topic/alexandrite-of-brjsilia-aproximatively-14-carats-w-FRM-414
I was told this was an alexandrite when given to me.
changing colors are deep purple to redish pink, and Blue to Green.
www.alexandrite.net/discussion/topic/i-was-told-this-was-an-alexandrite-when-given-to-m-FRM-424
aleksandriitti suomi?
värin vaihtokivi
www.alexandrite.net/discussion/topic/aleksandriitti-suomi-FRM-454
värin vaihtokivi
alexsadriitti
www.alexandrite.net/discussion/topic/verin-vaihtokivi-FRM-457

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