FA-AMTR024PY-009-010
Natural Gems Belgium Colored Stone Certification FA-AMTR024PY-009-010
IDENTIFICATION : Natural purple and yellow Ametrine - 14.20 ct - AAA ++ grade - octagon - unheated
Species : Natural Quartz
Variety : Ametrine
DESCRIPTION
Shape & Cutting Style : Octagon, Mixed Cut
Measurements : 14.4 x 12.5 x 9.5 mm
Carat Weight : 14.20 Carat
Color : good balanced yellow and purple with pinkinsh red shine
Clarity : comparable to VVS1
Transparency : Transparant
Birefringence : 0.009
Crystallography : hexagonal
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
A combination of amethyst and citrine.
Equally balanced yellow and purple color
Personal Note From Natural Gems Belgium:
This octagon has square appearance, looking flat on the upper surface, equal division of yellow and purple, symmetry is good, polish is very good, cut grade is good, clarity is very good, and cut is good to very good
Reference for AAA ++ grading:
Color grade is very good
Cut grade is good to very good
Carat weight is very good
Clarity is VVS ( very good)
Symmetry is good
