FA-AMTR024PY-002-281
Natural Gems Belgium Colored Stone Certification FA-AMTR024PY-002-281
IDENTIFICATION : Natural purple and yellow Ametrine - 13.178 ct - Octagon
Species : Natural Quartz
Variety : Ametrine
DESCRIPTION
Shape & Cutting Style : Octagon
Measurements : 13.2 x 12.2 x 9.4 mm
Carat Weight : 13.178 Carat
Color : good balanced yellow and purple (good division up side of stone, distinct division mainly visible back side)
Clarity : comparable to VS
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.
Personal Note From Natural Gems Belgium:
This octagon has good shiny colorful appearance, looking on upside you see a good division of yellow and purple , looking flat on the downside surface, you see a distinct division of yellow and purple, symmetry is good to very good, polish is very good, cut grade is very good, clarity is very good,
