Ch. 2: Precious Gem stones in 1889/90

• Ch. 1: Gold, Silver in 1889/90
• Ch. 2: Gemstones in 1889/90

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• Kornitzer. Gem Trader.
• Preface & Contents
•  
• Louderback. Benitoite.
• Neptunite Description
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• US Geol. Surv. 1916. Gemstones, Metals.
• Ch. 3: Gemstones in 1916
•  
• US Geol. Surv. 1918. Gemstones, Metals.
• Ch. 3: Gemstones in 1918
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• US Geol. Surv. 1920. Gemstones, Metals.
• Ch. 3: Gemstones in 1920
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• US Geol. Surv. 1915. Gemstones, Metals.
• Ch. 3: Gemstones in 1915
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• US Geol. Surv. 1914. Gemstones, Metals.
• Ch. 3: Gemstones in 1914
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• US Geol. Surv. 1885. Gemstones, Metals.
• US Geol. Surv. 1915. Gemstones, Metals.
• US Geol. Surv. 1883-84. Gemstones, Metals.

Deposits Diamond Gemological Properties Gemstones Gold History Mine Mining Production USA

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