CA-MOON024LB-002-117

Natural Gems Belgium Certification : CA-MOON024LB-002-117

IDENTIFICATION : Natural Moonstone - blue adularescence - 3.319 ct - pear

Species : Natural Orthoclase (Anorthoclase)
Variety : blue Moonstone

DESCRIPTION

Shape & Cutting Style : Pear cabochon, polished both sides
Carat Weight :  3.319 Carat
Measurements : 12.9 x 9.2 x 3.7 mm
Color : milky white to clear with greenish blue and 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 milky white to clear with greenish blue and blue adularescence moonstone is all natural, and it's cut grade is good, symmetry is fair to good, polish is fair, luster is good.