Definition of "tanzanite" [tanzanite]

• A transparent variety of zoisite, used as a gem. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "We are number one in tanzanite and we also have minerals that can be developed on a commercial scale such as ruby, garnet, sapphire, copper, cobalt, tin, and so on."
• "The super expensive silver-leathered footwear are decorated with 185 carats of tanzanite which is a rare gemstone found only in Africa …"
• "Royalties on rough diamonds and gemstones such as tanzanite, on the other hand, should increase from 5 per cent to 7 per cent while, at the same time, royalties for cut and polished stones should rise from zero to 3 per cent."