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The Gemmological Association
of Hong Kong Ltd


P.O. Box 97711, Tsim Sha Tsui,
Kowloon, Hong Kong

Tel. (852) 2366-6006 / Fax. : (852) 2312-0669

E-mail : info@gahk.org
 
Diamond Standard
Diamond Standard
Method 1 - Autheticity
Method 2 - Weight of Diamond
Method 3 - Colour of Diamond
Method 4 - Fluorescence of Diamond
Method 5 - Clarity of Diamond
Method 6 - Shape cut & proportion
Method 7 - Diamond Cutgrade
References
   
Fei Cui (Jadeite Jade) Standard
Fei Cui (Jadeite Jade) Standard
Method 1 - Shape and Cut
Method 2 - Measurement of Dimensions
Method 3 - Measurement of Weight
Method 4 - Identification of Transparency
Method 5 - Identification of Colour
Method 6 - Polariscope Examination
Method 7 - Determination of Refractive Index
Method 8 - Determination of Specific Gravity
Method 9 - examination of Fluorescence
Method 10 - Chelsea Colour Filter Examination
Method 11 - Spectroscopic Examination
Method 12 - Magnification Examination
Method 13 - Infrared Spectrum Examination
Appendix
Glossary
   
Fei Cui Test Table Kit
Fei Cui Test Table Kit
     
   
Test Booklet
Test Booklet
     

 

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