Report · 674e9b7b-9c5f-4844-9e22-a9c8ae006c36

Gemstone Identification Report #012-2026

Color-change Green/Purple Sapphire, Corundum — —

Issued

02/03/2026

Olena Rybnikova, PhD · GIA

Origin

Songea, Tanzania

Species
Color-change Green/Purple Sapphire, Corundum
Specimen
—
Variety
Pear
Weight
0.320 ct
Dimensions
4.5 x 4.0 x 2.0
R.I.
1.762 - 1.770
D.R.
0.008
Pleo.
Strong purple to yellowish green.
Fluor. LW
LW (365 nm) - inert
Fluor. SW
SW (254 nm) - inert
Chelsea
No reaction
Microscope
Red crystal inclusion, minute needles.
Treatment
Untreated
Origin
Songea, Tanzania
Confirmed by Raman spectroscopy.