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Ch. 10: Gem Cutting Engraving
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DIAMOND-CUTTING.
257
As already mentioned, there is little doubt that the first diamonds to which value was attached were natural crystals, that is to say, octahedrons or
derived forms; and when the cutting of diamonds became known in the Indies, it was necessarily diamonds of this class that had to be operated upon.
Accordingly, when we examine the figures of
ancient Indian diamonds given by Tavernier and
Bernier, we find that the primitive style of cutting
in India was to take an octahedron, replace one of
17
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Table Of Contents
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Dieulafait. Diamonds and Precious Stones.
Front page, Preface, Illustrations
Ch. 1
: Introduction
Ch. 2
: Historical Survey
Ch. 3
: Diamond
: Famous Diamonds
Ch. 4
: Several Gems
: Ruby
: Sapphire
: Topaz
: Amethyst
: Beryl and Aquamarine
: Turquoise
Ch. 5
: Several Gems
: Quartz
: Opal
: Agate
: Jasper
: Zircon
: Garnet
: Peridot
: Jade
: Tourmaline
: Lapis-Lazuli
: Malachite
Ch. 6
: Malachite
: Coral
: Amber
Ch. 7
: Synthetic Diamonds
Ch. 8
: Synthetic Gems
Ch. 9
: Gemstone Imitations
Ch. 10
: Gem Cutting
Ch. 11
: Gen. Characteristics Gems
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