Whats Covered
- HOW STONES ARE DISTINGUISHED FROM ONE ANOTHER
- REFRACTION
- DOUBLE REFRACTION
- ABSORPTION AND DICHROISM
- SPECIFIC GRAVITY
- LUSTER AND OTHER REFLECTION EFFECTS
- HARDNESS
- HOW TO TELL SCIENTIFIC STONES FROM NATURAL GEMS
- HOW TO TEST AN UNKNOWN GEM
- SUITABILITY OF STONES FOR VARIOUS TYPES OF JEWELS, AS DETERMINED BY HARDNESS, BRITTLENESS, AND CLEAVABILITY
- THE NAMING OF PRECIOUS STONES
- HOW ROUGH PRECIOUS STONES ARE CUT
- FORMS GIVEN TO PRECIOUS STONES
- THE USE OF BALANCES AND THE UNIT OF WEIGHT IN USE FOR PRECIOUS STONES
Diploma in Identifying Precious Stones
190,00$ Prix original
28,03$Prix promotionnel
Digital Certificate of Completion
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