Natural Green Chrome Tourmaline - 0.96 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-001-002
IDENTIFICATION
Species : Natural Tourmaline
Variety : Chrome Tourmaline
DESCRIPTION
Shape & Cutting Style : oval, mixed cut
Measurements : 6.7 x 5.7 x 3.7 mm
Carat Weight : 0.96 carat
Color : Green (Color change to Orange by viewing under Chelsea filter with Sunlight)
Clarity : comparable with I2
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 green color, that gets prighter in direct sunlight, under a chelsea filter in combination with sunlight it turns into a complete brownish orangy tourmaline gemstone. It has cut grade good, polish good, symmetry fair to good.
The gemstone has a tiny chip un the curved downside of the gem, only visible for experienced gemlovers or jewelers, advised for jewelry.
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
