FA-NRUB024PR-014-009
Natural Gems Belgium Colored Stone Certification FA-NRUB024PR-014-009
IDENTIFICATION : Natural purplish red Ruby - 7.21 ct - oval - unheated - Africa
Species : Natural Corundum
Variety :Ruby
DESCRIPTION
Shape & Cutting Style : Oval, Mixed Cut
Measurements : 12.0 x 10.2 x 7.1 mm
Carat Weight : 7.21 Carat
Color : Purplish Red
Clarity : I3 (small chipped)
Transparency : Transparant
Birefringence : 0.008-0.009 checked
Luster : Vitreous
Hardness : 9
Inclusions : mainly rutile needles
Refractive index : 1.757-1.779 checked 1.763
Specific gravity : 3.99-4.1 checked 4.0
Dispersion : 0.018 checked
COMMENTS :
No indications of heating, no indications of any other treatment
Small chipped not visible without loupe, not interfearing for setting
Personal Note From Natural Gems Belgium:
This natural ruby is unheated and unaltered, with a fair cut grade and a fair polishing grade. Its symmetry is good and its luster is fair to good, making it a pure and authentic gemstone. Due to it's dark color the inclusions are not this clear visible with the eye, and a gemlight is nescessary to show the inclusions.
