FA-AMTR024PY-001-151
Natural Gems Belgium Colored Stone Certification FA-AMTR024PY-001-151
IDENTIFICATION : Natural purple and yellow Ametrine - 14.059 ct - AAA grade - octagon
Species : Natural Quartz
Variety : Ametrine
DESCRIPTION
Shape & Cutting Style : Octagon, Step Cut
Measurements : 13.8 x 11.6 x 10.0 mm
Carat Weight : 14.059 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
Reference for AAA grading:
Color grade is good (purple good - yellow very good)
Cut grade is very good
Carat weight is excellent
Clarity is VVS ( very good)
Symmetry is very good
Luster is high and varies form golden to pinkish hues
