A HAND-BOOK OF
PRECIOUS STONES
BY
M. D. ROTHSCHILD
NEW YORK & LONDON
G. P. PUTNAM’S SONS
The Knickerbocker Press
1890
COPYRIGHT BY
M. D. ROTHSCHILD
1889
The Knickerbocker Press, New York
Electrotyped and Printed by
G. P. Putnam’s Sons
CONTENTS.
| PAGE | |
| What are Precious Stones? | 7 |
| Physical Characters— | |
| Crystallization | 10 |
| Cleavage | 10 |
| Fracture | 11 |
| Optical Properties— | |
| Refraction | 12 |
| Polarization of Light | 13 |
| Pleiochroism | 14 |
| Colors | 15 |
| Lustre | 17 |
| Streak | 18 |
| Hardness | 19 |
| Specific Gravity | 21 |
| Weight | 27 |
| Fusibility | 28 |
| Magnetism | 30 |
| Transparency | 30 |
| Phosphorescence | 31 |
| Electricity | 31 |
| Cutting and Polishing | 32 |
| Diamond | 35 |
| Corundum | 39 |
| The Ruby | 40 |
| Sapphire | 43[Pg ii] |
| Fancy Sapphires | ... BU KİTABI OKUMAK İÇİN ÜYE OLUN VEYA GİRİŞ YAPIN!Sitemize Üyelik ÜCRETSİZDİR! |