GLOBAL GEMOLOGY - RARE GEMS & JEWELS
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moss agate


Victorian era antique Scottish agate brooch set with moss agate, jasper, banded agate & bloodstone in a hand chased sterling silver setting.
Photo courtesy of Scott Papper, GIA GG, AJP, CM (NAJA), Global Gemology & Appraisals
Variety:  Moss Agate
Species:  Chalcedony
Mohs Hardness:  6.5 to 7 out of 10
Color:  Transparent to semi-translucent, with green, brown, or black inclusions that resemble moss

RI:  1.535 to 1.539 (1.53 or 1.54 spot reading)
Birefringence:  Usually not detectable
SR/DR/AGG:  AGG
Spectrum:  Not diagnostic

Fluorescence:  Generally inert
SG:  2.60 (+0.10 / -0.05)

moss agate facts

Victorian era antique Scottish agate brooch featuring moss agate, jasper, and foil-backed rock crystal set in sterling silver with hand chased details
Photo courtesy of Scott Papper, GIA GG, AJP, CM (NAJA), Global Gemology & Appraisals

Moss agate is a variety of chalcedony that is identifiable by its characteristic, moss-like inclusions.

Moss agate ranges from semitransparent to semitranslucent, with green, brown, or black moss-like inclusions.

  • HOME
  • ABOUT US
  • SHOP
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • DECORATIVE PRINTS
    • THE ART OF GEMOLOGY
  • APPRAISALS
    • INSURANCE
    • DIVORCE
    • ESTATE TAX
    • ESTATE DISTRIBUTION
    • CHARITABLE DONATION
    • LIQUIDATION
    • APPRAISALS THRU EMAIL
  • SELL YOUR JEWELRY
  • JEWELRY EDUCATION
    • DIAMOND FACTS
    • JEWELER DIRECTORY
    • JEWELRY PERIODS
    • POCKET WATCHES
    • NATIVE AMERICAN JEWELRY
  • GLOSSARY