Natural Red Ruby - 21.545 ct - rough ruby - untreated - Africa

Natural Red Ruby - 21.545 ct - rough ruby - untreated - Africa

Certificate: RO-RUBR025RE-003-002

Gem Type: Corundum - Ruby

Weight: 21.545 Carat

Shape: Rough

Size: 17.5 x 12.6 x 11.1 mm.

Color: Red 

Clarity: Opaque

Luster: N/A

Treatment: untreated

Birefringence : 0.008-0.009
Luster : Vitreous
Hardness : 9
Inclusions : included but avoidable in cutting
Refractive index : 1.757-1.779
Specific gravity : 3.99-4.1
Dispersion : 0.018

COMMENTS :

No indications of heating

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