FA-TOPAO26SB-003-310

Natural Topaz - Sky Blue - 0.454 ct - square - irradiated

Natural Gems Belgium Colored Stone Certification FA-TOPAO26SB-003-310

IDENTIFICATION

Species : Natural Topaz
Variety :  blue topaz

DESCRIPTION

Shape & Cutting Style : Square Cut
Measurements : 4 x 4 mm
Carat Weight : 0.454 carat
Color :  blue (sky blue)
Clarity : comparable to VS
Transparency : Transparent
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

Color improved by irradiation

Personal Note From Natural Gems Belgium:

high luster - Good Color  - Good cut - good clarity