Gem-Stones and Their Distinctive Characters

TABLE IV

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Opening pages

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PREFACE LIST OF PLATES

Chapters

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Other sections

TABLE I TABLE II TABLE III TABLE IV TABLE V TABLE VI TABLE VII TABLE VIII TABLE IX.—Data INDEX FOOTNOTES:

Colour-Dispersion of Gem-Stones[9]

Moonstone ·012

Quartz ·013

Beryl ·014

Topaz ·014

Chrysoberyl ·015

Tourmaline ·017

Spodumene ·017

Corundum ·018

Peridot ·020

Spinel ·020

Garnet (Almandine) ·024

Garnet (Pyrope) ·027

Garnet (Hessonite) ·028

Zircon ·038

Diamond ·044

Sphene ·051

Garnet (Demantoid) ·057

Notes in this chapter

Note 1 · The dispersion is the difference of the refractive indices corresponding to the B and G lines of the solar spectrum. The value for crown-gla

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