Links

Albertus Magnus

(1200-1280 C.E.)

short bio 

longer bio

The Book of Secrets: Of the Virtues of Herbs, Stones, and Certain Beasts, (1550, Old English). Here's a modern 20-page introduction. 

al-Biruni

(973-1048 C.E.)

short bio

longer bio

On Minerals (10th century, Islam)  

George Frederick Kunz

(1856-1932)

bio

Gems and Precious Stones of North America,
(1890, Scientific Pub. Co., New York)

Natal Stones: Sentiments and Superstitions Connected with Precious Stones, (1st edition, 1892, Tiffany & Co, New York). Here's the 2nd edition, published in 1909. 

Folklore of Precious Stones. (1894, Schulte Publishing Co., New York)

The Curious Lore of Precious Stones,(1913, J.B. Lippincott Co., Philadelphia)

The Magic of Jewels and Charms, (1915, J.B. Lippincott Co., Philadelphia)

Shakespeare and Precious Stones, (1916, J.N. Lippincott Co., Philidelphia) 

Karl Fabergé

(1846-1920)