Ch. 7: Quartz Group - Opal, Rock Crystals, Amethysts, Rose Quartz, Agate, etc.

• Table of Contents & Introduction
• Ch. 1: Diamonds
• Ch. 2: Sapphire, Ruby, ... Spinel
• Ch. 3: Turquoise
• Ch. 4: Topaz & Tourmaline (Rubellite, Indicolite, & Achroite)
• Ch. 5: Garnet Group
• Ch. 6: Beryl ... Euclase
• Ch. 7: Quartz Group
• Ch. 8: Spodumene, ... Lapis Lazuli
• Ch. 9: Feldspar Group
• Ch. 10: Chiastolite, ... Fluorite
• Ch. 11: Amber, ... Cat's-Eye
• Ch. 12: Pearls
• Ch. 13: Canada
• Ch.14: Mexico & Central America
• Ch.15: Aboriginal Lapidarian Work
• Ch.16: Definitions, Values, etc.
• Index

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Deposits Diamond Gemological Properties Gemstones Gold History Mine Mining Production USA

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