FA-OPPC024WH-001-001

Natural Gems Belgium Colored Stone Certification : FA-OPPC024WH-001-001

IDENTIFICATION : Natural White Opal - play of color - 1.71 ct - oval - unheated - Yita Ridge, Ethiopia

Species : Natural Opal
Variety : White Opal

DESCRIPTION

Shape & Cutting Style : Oval cabochon, polished both sides
Measurements : 10.5 x 7.5 x 4.6 mm
Carat Weight : 1.71Carat
Color : White-Orange-Green-Yellow-Violet-Blue Flashing
Transparency : Semi-Translucent
Origin: Yita Ridge, Ethiopia

Birefringence : none
Crystallography : Amorphous
Dispersion : Very low
Luster : Play of color floral rainbow
Hardness : 6-6.5
Refractive index : 1.37-1.47
Specific gravity : 2.10

COMMENTS :

Optical Effect : Opaliscence (Floral Rainbow)

no indications of heating, no indications of other treatments

Personal Note From Natural Gems Belgium:

this white opal is an oval cabochon gemstone, that in normal daylight already displays the rainbow play of color, and in direct sunlight displays a magnificent floral rainbow color play.
polish grade is good, symmetry is fair, luster is very good, displaying good color
where white opal mosty is a plain white stone, this gemstone is white to orangy yellow at normal daylight