Report · 99cc6f66-07d5-46e6-8925-d386119d861d

Gemstone Identification Report #074-2026

Star Black Sapphire, Corundum — —

Issued

03/03/2026

Olena Rybnikova, PhD · GIA

Origin

Bangkaja, Chanthaburi, Thailand

Species
Star Black Sapphire, Corundum
Specimen
—
Variety
Cabochon
Weight
3.260 ct
Dimensions
9.0 x 7.0 x 4.5
R.I.
1.76
D.R.
Not applicable
Pleo.
Not applicable
Fluor. LW
LW (365 nm) - inert
Fluor. SW
SW (254 nm) - inert
Chelsea
Weak brownish red
Treatment
Untreated
Origin
Bangkaja, Chanthaburi, Thailand

No description provided.