Natural Yellowish orangy green Chrome Tourmaline - 1.78 ct - oval - unheated ; color change under incadescent light and under chelsea filter with sunlight
This gem has a unique quality, in that its color changes when exposed to different types of light. Under incandescent light, the color changes, and under sunlight filtered through a Chelsea filter, the color changes again. This is a fascinating and rare gem that adds a special touch to any jewelry collection.
Natural Gems Belgium Colored Stone Certification FA-TOCH024GR-001-003
IDENTIFICATION
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
Specific gravity : 3.39-3.41
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
FIND THE ONLINE CERTIFICATE HERE
for general impression take a look at the pictures
All items are sent insured with track and trace regardless of value
