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| Author(s) :- Antoinette L.Bonanno Matlins | Format :- Hardback |
| Publisher :- Robert Hale Ltd | Pub. Date :- 1995-11-01 |
| ISBN-13 :- 9780719802515 | |
| Edition:- New ed | |
| Dimensions :- 240 x 165 x 31 | |
| Weight :- 930 |
Explains how to use pocket, portable and laboratory instruments to identify diamonds and coloured gems and to separate them from imitations and 'look-alikes'. This work helps you learn how to tell the difference between them; and recognize the limitations of your skill and when to employ the services of a professional gemmologist or laboratory.