FA-AMTR024PY-001-152
Natural Gems Belgium Colored Stone Certification FA-AMTR024PY-001-152
IDENTIFICATION : Natural purple and yellow Ametrine - 10.694 ct - AAA grade - octagon
Species : Natural Quartz
Variety : Ametrine
DESCRIPTION
Shape & Cutting Style : Octagon, Step Cut
Measurements : 14.5 x 10.4 x 8.5 mm
Carat Weight : 10.694 Carat
Color : good balanced yellow and purple (clear straight division up and down)
Clarity : comparable to VVS
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.
Good balanced and clear laser line divided yellow and purple color
Personal Note From Natural Gems Belgium:
This octagon has good shiny colorful appearance, looking flat on the upper surface, you see a good balanced division of yellow and purple, symmetry is very good, polish is very good, cut grade is very good, clarity is very good. Very beautiful luster. Almost 50/50 color division
Reference for AAA grading:
Color grade is good to very good (almost 50/50 % color division)
Cut grade is very good
Carat weight is good
Clarity is VVS ( very good)
Symmetry is very good
Luster is high and varies form golden to purplish hues
