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Untreated Alexandrite Cat's Eye 0.63 (OAC063)

untreated alexandrites cat's eye gemstone roundish
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0.63 Carat
Color Changer
Medium Dark 80



  • Identification: Natural Unheated & Untreated Alexandrite Cat's Eye
  • Carat: 0.63
  • Shape: Roundish Oval Single Cabochon
  • Measures: 4.95x4.15x3.25 (millimeter)
  • Color Grade: Very Good
  • Color Change: Excellent
  • Tone: MD80
  • Color Zoning: None
  • Clarity: Translucent with no inclusions
  • Cutting Grade: Very Good
    • Finish: Very Good, 
    • Ray: Very Good, sharp, centered and well travelling
  • Origin: India
  • Treatment: None

Certificate No: AIGS GF16060207

Overall Grade: Very Good

Comment: After a long drought in Alex cat's eyes here is a new member: Metallic blue-green at day to red-purple at night with a fine silver ray. Not a giant gem but giant fun. Normally Alexandrites are a pest with the camera but as you can see from the number of images I made: not so here. This is called a 'dramatic' color change, however, the gem is Medium Dark 80, thus it is not a floating transparent color-cloud with ray (like ACA816but solid translucent matter. The ray is easily visible but the color change, as always in Alex, needs light and attention. (If somebody says CC in Alex is easy, he either has a gem of unprecedented quality, or he is jesting, not to say 'lying', I'm just honest here.) With only 0.63 this gem provides as much size as possible, with a flat symmetric back, conic shape, no weight loss and 5x4mm. Free of inclusions under the lens. The little smudge on one image is only visible under the torch from the side. As always, AIGS report, grading, rainforest and free shipping included in our price. With a diamond halo, or if you are adventurous (see, under more images, the Alexandrite flower we made with the last cat's eye) with a round of facetted Alexandrites, the gem is big enough for a lady's ring. Almost roundish first impression. Remarkable strong blue in the day color.


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