CA-MOON024LB-002-142

Natural Gems Belgium Certification : CA-MOON024LB-002-142

IDENTIFICATION : Natural Moonstone - faint blue adularescence - 3.518 ct - oval cabochon

Species : Natural Orthoclase (Anorthoclase)
Variety : blue Moonstone

DESCRIPTION:

Shape & Cutting Style : Oval cabochon, polished both sides
Carat Weight :  3.518 Carat
Measurements : 9.8 x 8.7 x 5.1 mm
Color : Milky white with faint but deep 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 with faint but deep blue adularescence moonstone is all natural, and it's cut grade is fair, symmetry is poor to fair, polish is fair , luster is faint.