Report · d6394609-ebfa-4468-9776-b8c9ca07c880

Gemstone Identification Report #006-2026

Sapphire, Corundum — —

Issued

02/03/2026

Olena Rybnikova, PhD · GIA

Origin

Bangkaja, Chanthaburi, Thailand

Species
Sapphire, Corundum
Specimen
—
Variety
Oval
Weight
0.880 ct
Dimensions
6.0 x 5.0 x 3.1
R.I.
1.762 - 1.770
D.R.
0.008
Pleo.
Moderate violetish blue to blue
Fluor. LW
LW (365 nm) - inert
Fluor. SW
SW (254 nm) - inert
Chelsea
No reaction
Microscope
Strong angular color zoning, dissolved rutile needes.
Treatment
Beryllium Diffusion
Origin
Bangkaja, Chanthaburi, Thailand

No description provided.