FA-OPPC024WH-001-003

Natural Gems Belgium Colored Stone Certification : FA-OPPC024WH-001-003

IDENTIFICATION : Natural Welo Opal - play of color - 1.49 ct - pear - unheated 

Species : Natural Opal
Variety : Welo Opal

DESCRIPTION

Shape & Cutting Style : Pear cabochon, polished both sides
Measurements : 11.5 x 8.0 x 3.6 mm
Carat Weight : 1.49 Carat
Color : White with rainbow opaliscence
Transparency : Transparent
Origin: Ethiopia

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

COMMENTS :

Optical Effect : Opaliscence ( White-Red-Orange-Green-Yellow-Violet-Blue )

no indications of heating, no indications of other treatments

Personal Note From Natural Gems Belgium:

This welo opal is a white opal with sky blue shine, displaying a clear and entertaining play of color. the color grade is good to very good, due to the Red-Orange-Green-Yellow-Violet-Blue Flashing Opaliscence that is very pronounced.
polish grade is good to very good, it is pear shaped with good symmetry, luster is very good