Underground Treasures: How and Where to Find Them / A Key for the Ready Determination of All the Useful Minerals Within the United States

by James Orton

3.—Amethyst.

Same as Rock Crystal, but colored purple or bluish violet. Generally in clustered crystals.

Value.—When clear and finely colored, it is a favorite gem.

Localities.—Usually found with agate. Keweenaw Point, Pic Bay and Gargontwa on Lake Superior; Bristol, R. I.; Surry, N. H.; East Bradford, Aston, Chester, Thornbury, Edgemont, Sadsbury, Birmingham, Middletown and Providence, Penn.; Greensboro, N. C.