1. a blue to violet gemstone that is a variety of the mineral zoisite, found primarily in Tanzania

Examples

• The jeweler displayed a stunning tanzanite ring in the window.
• Tanzanite is prized for its brilliant blue-purple color.
• She inherited a necklace with tanzanite stones from her grandmother.
• The tanzanite mine in Tanzania produces some of the world’s finest specimens.
• His cufflinks featured small tanzanite gems that caught the light beautifully.
• Tanzanite is considered one of the rarest gemstones on Earth.