FA-CHAG024GR-001-001

Natural Gems Belgium Colored Stone Certification FA-CHAG024GR-001-001

IDENTIFICATION : Natural green Agate - 19.55 ct - Free Form Cabochon - unheated

Species : Natural Chalcedony (a cryptocrystalline form of quartz)
Variety : Agate

DESCRIPTION

Shape & Cutting Style : Free form, cabochon, polished both sides
Measurements : 24.3 x 17.0 x 6.7 mm
Carat Weight : 19.55 Carat
Color : Green 
Clarity : N/A
Transparency : Semi-Translucent

Birefringence : Up to 0.004
Crystallography : Hexagonal (trigonal)
Dispersion : None
Luster : Waxy
Hardness : 6.5-7
Refractive index : 1.530-1.543 checked = in margin
Specific gravity : 2.60-2.64 checked = in margin

COMMENTS :

No indications of heating, no indications of any other treatment

Personal Note From Natural Gems Belgium:

This free form cabochon has very good polish grade, and has a nice natural variation of green color tones.