FA-AMTR024PY-001-073
Natural purple and yellow Ametrine - 11.08 ct - AAA grade - octagon - unheated - Bolivia
Natural Gems Belgium Colored Stone Certification FA-AMTR024PY-001-073
IDENTIFICATION
Species : Natural Quartz
Variety : Ametrine
DESCRIPTION
Shape & Cutting Style : Octagon, Step Cut
Measurements : 15.4 x 9.8 x 8.3 mm
Carat Weight : 11.08 Carat
Color : good balanced yellow and purple (clear straight division up and down)
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.
Good balanced and clear laser line divided yellow and purple color
Personal Note From Natural Gems Belgium:
This octagon has good shiny coloful appearance, looking flat on the upper surface, you see a good balanced division of yellow and purple, symmetry is good to very good, polish is very good, cut grade is very good, clarity is very good, and cut grade is good to very good
Reference for AAA grading:
Color grade is good (purple good - yellow very good)
Cut grade is good to very good
Carat weight is good
Clarity is VVS ( very good)
Symmetry is good to very good
