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Frank Bertram Wade. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public
Table of Contents
PREFACE
INTRODUCTION
A Text-Book of Precious Stones
LESSON I
HOW STONES ARE DISTINGUISHED FROM ONE ANOTHER
LESSON II
REFRACTION
LESSON III
DOUBLE REFRACTION
Table Giving Character of Refraction in the Principal Gems
LESSON IV
ABSORPTION AND DICHROISM
LESSON V
SPECIFIC GRAVITY
Table of Specific Gravities of the Principal Gem Materials
LESSON VI
SPECIFIC GRAVITY DETERMINATIONS
LESSON VII
LUSTER AND OTHER REFLECTION EFFECTS
LESSON VIII
HARDNESS
Table of Hardness of the Principal Gem-Stones
LESSON IX
HARDNESS—Continued
LESSON X
DISPERSION
LESSON XI
COLOR
YELLOW STONES
LESSON XII
COLOR—Continued
GREEN STONES
LESSON XIII
COLOR—Continued
BLUE STONES
LESSON XIV
COLOR—Concluded
PINK, PURPLE, BROWN, AND COLORLESS STONES
LESSON XV
HOW TO TELL SCIENTIFIC STONES FROM NATURAL GEMS
LESSON XVI
HOW TO TEST AN "UNKNOWN" GEM
LESSON XVII
SUITABILITY OF STONES FOR VARIOUS TYPES OF JEWELS, AS DETERMINED BY HARDNESS, BRITTLENESS, AND CLEAVABILITY
LESSON XVIII
MINERAL SPECIES TO WHICH THE VARIOUS GEMS BELONG AND THE CHEMICAL COMPOSITION THEREOF
LESSON XIX
THE NAMING OF PRECIOUS STONES
LESSON XX
THE NAMING OF PRECIOUS STONES (Concluded)
LESSON XXI
WHERE PRECIOUS STONES ARE FOUND
LESSON XXII
HOW ROUGH PRECIOUS STONES ARE CUT
LESSON XXIII
HOW ROUGH PRECIOUS STONES ARE CUT AND WHAT CONSTITUTES GOOD "MAKE"—Concluded
LESSON XXIV
FORMS GIVEN TO PRECIOUS STONES
LESSON XXV
IMITATIONS OF PRECIOUS STONES
LESSON XXVI
ALTERATION OF THE COLOR OF PRECIOUS STONES
LESSON XXVII
PEARLS
LESSON XXVIII
CULTURED PEARLS AND IMITATIONS OF PEARLS
LESSON XXIX
THE USE OF BALANCES AND THE UNIT OF WEIGHT IN USE FOR PRECIOUS STONES
LESSON XXX
TARIFF LAWS ON PRECIOUS AND IMITATION STONES
BIBLIOGRAPHY
INDEX
