FA-TOVE024GR-002-277
Natural Green Tourmaline - 3.429 ct - cushion - AAA grade - unheated verdelite
Natural Gems Belgium Colored Stone Certification FA-TOVE024GR-002-277
IDENTIFICATION
Species : Natural Tourmaline
Variety : Green Tourmaline (verdelite)
DESCRIPTION
Shape & Cutting Style : Cushion, Mixed Cut
Measurements : 10.1 x 9.7 x 4.9 mm
Carat Weight : 3.429 carat
Color : deep olive green
Clarity : comparable with VVS to IF
Transparency : Transparent
Birefringence : 0.020
Crystallography : Hexagonal (trigonal)
Dispersion : 0.017
Luster : Vitreous
Hardness : 7
Refractive index : 1.603-1.820
Specific gravity : 3.39-3.41
COMMENTS :
No indications of heating, no indications of any other treatment;
Green Tourmaline is often referred to as verdelite
Personal Note From Natural Gems Belgium:
This all natural cushion cut tourmaline is a olive green gemstone with yellowish green fire, with cut grade good, has symmetry good to very good, polish grade good to very good, and a clarity comparable to VVS to IF, making it a gemstone with good vitreous luster, and nice clear green color.
Reference for AAA grading:
Color grade is good to very good
Cut grade is good
Carat weight is very good
Clarity is VVS to IF
