FA-TOCH024GR-001-003
Natural Gems Belgium Colored Stone Certification FA-TOCH024GR-001-003
IDENTIFICATION : Natural Yellowish orangy green Chrome Tourmaline - 1.78 ct - oval - unheated
Species : Natural Tourmaline
Variety : Chrome Tourmaline
DESCRIPTION
Shape & Cutting Style : oval, mixed cut
Measurements : 8.5 x 7.0 x 4.3 mm
Carat Weight : 1.78 carat
Color : yellowish orangy Green (Color change to Orange by viewing under Chelsea filter with Sunlight)
Clarity : comparable with SI1
Transparency : Transparent
Birefringence : 0.020
Crystallography : Hexagonal (trigonal)
Dispersion : 0.017
Luster : Vitreous
Hardness : 7
Refractive index : 1.603-1.820 (checked = in margin)
Specific gravity : 3.39-3.41 checked = in margin)
COMMENTS :
No indications of heating, no indications of any other treatment;
Color change to Orange by viewing under Chelsea filter with Sunlight
Tiny chip on down side
Personal Note From Natural Gems Belgium:
This natural chrome tourmaline has a vibrant yellowish orangy green color, that gets brighter in direct sunlight, under a chelsea filter in combination with sunlight it turns into a complete brownish red and green tourmaline gemstone. It has cut grade good, polish good, symmetry good. Amazing luster in direct sunlight showing yellow color tones
