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Diamond?
Irradiated?
HPHT treated?
Synthetic?
Ruby?
Glass filled ?
Diffused?
Synthetic?
Tables of Gemstone Identification
Revised Edition 2019
Emerald?
Fracture filled?
Triplet?
Synthetic?
Sapphire?
Heat treated ?
Diffused?
Synthetic?
"Highly recommended for gemmologists"
  GEM-A, GEMS&JEWELLERY WINTER 2019
         A compilation of key information for the gemologist:
           - to analyze the results obtained with all the standard gemological tools
           - to distinguish between natural and treated gemstones, synthesis and imitations
           - to avoid traps and potentially misleading results
 
 
        Overview                    Order now
 
 
 
        "... Blue Chart's new incredibly comprehensive and detailed gem ID chart..."
              INSTORE MAGAZINE NOVEMBER 2002: THE MAGAZINE FOR THE AMERICAN JEWELRY STORE OWNER
 
 
Amber?  

Amber or copal?
Clarity improved ?
Reconstructed?
Gems, Minerals, & Fossils WebRing by s_r_a_inc
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Turquoise?  


Impregnated?
Reconstructed ?
Synthetic?