Description

Video #1:
https://www.youtube.com/watch?v=168KWPMYTDo

Video #2:
https://www.youtube.com/watch?v=la_fcD593ZA


Variety: Natural Spinel
Carat Weight: 4.23 carats
Measurements: 13.15 x 9.66 x 5.21 mm
Clarity: Eye-Clean (silk)
Color: Vivid Blue changing to Gray
Shape & Style: Pear Mixed Cut
Cut: Very Good (Native Cut)
Treatment(s): None
Origin: Tanzania

Unusual color. Vivid Blue (direct sunlight), opalescent Greenish Blue (natural daylight), Blue (fluorescent light), Gray (incandescent light).

Cobalt-bearing (extent unknown). Weak green reaction to 395nm UV, consistent with Tanzania.



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PP F&F


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