FA-TOPAO26SB-003-098

Natural Swiss Blue Topaz - 0.510 ct - round - irradiated - high quality - certified natural

Natural Gems Belgium Colored Stone Certification FA-TOPAO26SB-003-098

IDENTIFICATION

Species : Natural Topaz
Variety :  blue topaz

DESCRIPTION

Shape & Cutting Style : round , brilliant Cut
Measurements : 4.7 x 4.8 x 3.0 mm
Carat Weight : 0.510 carat
Color :  blue (swiss blue)
Clarity : comparable to VVS
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
high luster - Good Color  - Excellent cut

Personal Note From Natural Gems Belgium:

high luster - Good Color  - very good cut