Natural Orange Crystal Opal - 2.82 ct - Fire Opal - Ethiopia - untreated
It is often misunderstood that every orange opal is a fire opal - an orange opal is only a fire opal when there is a play of color in the crystal
Additional lighting is used to show brightness and color play
Natural Gems Belgium Colored Stone Certification : FA-OPCR025FI-003-008
IDENTIFICATION
Species : Natural Opal
Variety : Orange Crystal Opal (fire opal)
DESCRIPTION
Shape & Cutting Style : Pear cabochon, polished both sides
Measurements : 12.0 x 8.0 x 5.6 mm
Carat Weight : 2.82 Carat
Color : Orange
Optical Phenomenon : opalescence
Transparency : semi-transparent
Origin: Ethiopia
Birefringence : none
Crystallography : Amorphous
Dispersion : Very low
Luster : Resinous
Hardness : 6-6.5
Refractive index : 1.37-1.47
Specific gravity : 1.95 - 2.00
COMMENTS :
Optical Effect : opaliscence (fire opal)
It is often misunderstood that every orange opal is a fire opal - an orange opal is only a fire opal when there is a play of color in the crystal.
no indications of heating, no indications of other treatments
Personal Note From Natural Gems Belgium:
Color : good to very good
Polish : good to very good
Carat Weight : Fair to good
symmetry : very good
clarity : Opaliscence
FIND THE ONLINE CERTIFICATE HERE
