CA-MOON024LB-002-099

Natural Moonstone - light greenish blue adularescence - 2.203 ct - marquise

Natural Gems Belgium Certification : CA-MOON024LB-002-099

IDENTIFICATION : Natural Moonstone - light greenish blue adularescence - 2.203 ct - marquise

Species : Natural Orthoclase (Anorthoclase)
Variety : Blue Moonstone

DESCRIPTION

Shape & Cutting Style : marquise cabochon, polished both sides
Carat Weight : 2.203 Carat
Measurements : 12.0 x 5.9 x 4.0 mm
Color : half clear half milky white with light greenish blue  adularescence
Transparency : Transparant
Hardness : 6.0
Birefringence : 005–0.006
Crystallography : monoclinic
Luster : Opalescent - Vitreous
Refractive index : 1.520-1.525
Specific Gravity : 2.56-2.59

COMMENTS :

No indications of heating, no indications of any other treatment

Adularescence is caused by the diffraction of light as it hits thin, alternating layers of orthoclase and albite within the gem. This produces the appearance of a floating, cloud-like, blue to white light inside the gem. A blue sheen is produced if the albite crystals are very fine. 

Personal Note From Natural Gems Belgium:

This half clear half milky white with light greenish blue  adularescence moonstone gemstone is all natural, and it's cut grade is fair to good, symmetry is fair to good, polish is fair to good, luster is good.