Natural Pure quartz - 6.959 ct - custom cut - clear quartz

Natural Pure quartz - 6.959 ct - custom cut - clear quartz

colors visible on video are the environmental influences, since pure cystal quartz easily adapts colors,

Natural Gems Belgium Colored Stone Certification  FA-QUAR026CL-003-258

IDENTIFICATION

Species : Natural Quartz
Variety : Clear Quartz

DESCRIPTION

Shape & Cutting Style : long cushion, custom Cut
Measurements : 14.9 x 9.5 x 6.7 mm
Carat Weight : 6.959 carat
Color : almost colorless 
Clarity : comparable with VS
Transparency : Transparent

Birefringence : 0.009
Crystallography : Hexagonal (trigonal)
Dispersion : 0.013
Luster : Vitreous
Hardness : 7
Refractive index : 1.544-1.553
Specific gravity : 2.651

COMMENTS :

No indications of heating, no indications of any other treatment

FIND THE ONLINE CERTIFICATE HERE