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Diamond Grading ABC
(A Hand Book for Diamond Grading)

Hardness 10 Diamond History
Diamond Cutting - Trade

Ideal Scope
Grading Polished Stones for Colour

Diamonds
By : Eric Bruton F. G. A.

Helium Rough

Gems
Their Sources, Descriptions and Identification

By : Robert Webster G. G. A.

Diamond Cutting
A Complete Guide to Diamond Processing

By : Basil, Water Meyer

Sarin Dia-Mark  
Dia Planner  
Maxi Machine  

 

 

 

 

 
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