Goshenite

History
Another variety of beryl, goshenite was often confused with diamond in ancient times. Technically not distinguished as a unique gemstone until the late 1800's, it is named after the town Goshen in Massachusetts, when it was first discovered in the US.

Features
Goshenite is the completely colorless variety of beryl, and like all other beryls, is harder than quartz but is softer than ruby or sapphire. It is frequently flawless, and forms in six sided crystals, usually flat at the ends.

Treatments
Though often used as a diamond substitute because of its clarity and transparency, goshenite is seldom treated to enhance itself. Sometimes it is colored by dyes or by diffusion in order to imitate another stone, such as emerald, morganite or aquamarine.

Principal Deposits
Goshenite is found in the United States, Brazil, Colombia, Tanzania, Russia, Australia and Canada.

Rarity
Good quality goshenite is relatively easy to come by, and is mined chiefly as a substitute for diamond, or for watch crystals.