FA-OPCR025WH-002-341

Natural White crystal Opal of 4.665 ct in oval cabochon - unheated

Natural Gems Belgium Colored Stone Certification : FA-OPCR025WH-002-341

IDENTIFICATION

Species : Natural Opal
Variety : White Opal

DESCRIPTION

Shape & Cutting Style : Oval cabochon, polished both sides
Measurements : 15.3 x 12.2 x 6.0 mm
Carat Weight : 4.665 Carat
Color : White with slight yellowish tone
Transparency : Opaque
Origin: Ethiopia

Birefringence : none
Crystallography : Amorphous
Dispersion : Very low
Luster : Milky
Hardness : 6-6.5
Refractive index : 1.37-1.47
Specific gravity : 2.10

COMMENTS :

Optical Effect : None

White with slight yellowish orangy tone

no indications of heating, no indications of other treatments

Personal Note From Natural Gems Belgium:

Color : good
Polish : good to very good
Carat Weight : Fair
symmetry : good
clarity : No opaliscence
polish : 

As a supportive seller, we want to help you make an informed decision. It's important to note that this white opal has no play of color. The cabochon is polished good both sides and has good symmetry