FA-TOCH024BY-001-001
Natural Gems Belgium Colored Stone Certification FA-TOCH024BY-001-001
IDENTIFICATION : Natural Chrome Tourmaline - 1.69 ct - oval - unheated
Species : Natural Tourmaline
Variety : Chrome Tourmaline
DESCRIPTION
Shape & Cutting Style : oval, mixed cut
Measurements : 9.0 x 6.5 x 4.0 mm
Carat Weight : 1.69 carat
Color : yellowish green - yellow to green under gemlight - green red under chelsea filter
Clarity : comparable with SI2
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
Personal Note From Natural Gems Belgium:
This natural chrome tourmaline exhibits a continuous color change phenomenon, displaying varying hues under different lighting conditions. With a good cut grade, good to very good facetting, and good symmetry, this unheated oval-shaped gemstone boasts exceptional polish.
