FA-TOVE024GR-002-278
Natural Gems Belgium Colored Stone Certification FA-TOVE024GR-002-278
IDENTIFICATION : Natural Green Tourmaline - 1.639 ct - oval - clean - very good luster - unheated verdelite
Species : Natural Tourmaline
Variety : Green Tourmaline (verdelite)
DESCRIPTION
Shape & Cutting Style : oval, mixed Cut
Measurements : 7.9 x 6.3 x 4.4 mm
Carat Weight : 1.639 carat
Color : olive green
Clarity : comparable with 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
Clean gemstone - good color - exceptional to find very good quality verdelite in smaller sizes
Personal Note From Natural Gems Belgium:
This all natural cushion cut tourmaline is a nice color olive green gemstone with light green fire, with cut grade very good, has symmetry good to very good, polish grade good to very good, and a clarity comparable to IF, making it a gemstone with good vitreous luster, and nice clear green color.
