Contents

The geology and mineralogy of sapphires. Sapphires from hard rock deposits - the Yogo Gulch deposit. The Yogo deposit from early reports. Interlude-Streeter, a London sapphire entrepreneur. Yogo in the post-war years. Sapphires from gravel deposits. Dry Cottonwood Creek. Rock Creek. The colour of sapphires. Altering the colour of sapphires. The colour of Rock Creek sapphires. The colour of dry Cottonwood Creek sapphires. Diffusing colour into sapphires. Heat equipment. Sapphires in commerce. Stop press.

Specifications

Pm Supplier	Hachette UK / Taylor & Francis / Informa UK Ltd 70000065
Pm Publisher	Chapman & Hall
Pm Isbn 10	0412987619
Pm Isbn 13	9780412987618
Pm Width	156
Pm Author	O'Donoghue, M
Pm Height	234
Pm Longness	0

Author: O'Donoghue, M
Page Count: 208