FA-TOPAO24CH-001-059

Natural Gems Belgium Colored Stone Certification FA-TOPAO24CH-001-059

IDENTIFICATION : Natural Champagne Topaz - 14.44 ct -Cushion - AA grade - irradiated

Species : Natural Topaz
Variety :  Brown topaz

DESCRIPTION

Shape & Cutting Style : Cushion , Mixed Cut
Measurements : 13.4 x 13.3 x 9.6 mm
Carat Weight : 14.44 carat
Color :  brown
Clarity : comparable to VS
Transparency : Transparent
origin : Brazil

Binefringence: 0.008-0.011
Crystallography : Orthorhombic
Hardness : 8
Luster : Vitreous
Refractive Index : 1.607-1.649 (1631=Brazil)
Specific Gravity : 3.50-3.57 ( 352-353)

COMMENTS

Treatment: Irradiation

Personal Note From Natural Gems Belgium:

This Brown topaz could be commercially called Champaign topaz or imperial topaz.
This because of the color that is orangy brown, and the red to orangy yellow fire inside the stone.
Champaign topaz is more yellowish brown, Whiskey topaz is more Orangy brown, whilst an imperial topaz the yellow and orangy is more pronounced. The cut grade is good to very good, polish is good to very good, symmetry is very good, and the luster is very good, making it a higher class gemstone.

Reference for AA grading:
Color grade is good, 
Cut grade is good to very good,
Carat weight is excellent,
Clarity is VS (if was VVS would have got AAA grade)
luster is very good