Natural orangy brown Winton Matrix Boulder Opal - 24.15 ct - semi round - unheated - Queensland
The striking combination of blue and green to yellow fire in this Natural orangy brown Matrix Boulder Opal, weighing 24.15 ct, is a testament to the beauty and rarity of this gem. Sourced from Queensland, this semi round cabochon is unheated and Natural. As a collector's item, this opal radiates luxury and sophistication, making it a valuable addition to any jewelry collection.
Natural Gems Belgium Colored Stone Certification : FA-WIMB024OB-001-089
IDENTIFICATION
Species : Natural Opal
Variety : Boulder Opal
DESCRIPTION
Shape & Cutting Style : semi round cabochon, polished both sides
Measurements : 21.3 x 21.0 x 7.6 mm
Carat Weight : 24.15 Carat
Color : orange and Brown covered Green-Yellow-Violet-Blue Flash
Transparency : Opaque
Origin: Queensland
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 (Iridescent)
no indications of heating, no indications of other treatments
Personal Note From Natural Gems Belgium:
This natural winton matrix boulder opal is a good example of Iridescence in boulder opal, showing mainly violet blue and green to yellow tones.
polish grade is fair to good, it is semi round shaped, luster is fair, displaying fair color
FIND THE ONLINE CERTIFICATE HERE
for general impression take a look at the pictures
All items are sent insured with track and trace regardless of value
