Found in just one place on earth, tanzanite is a relatively recent discovery. Tiffany & Co named this blue-violet variety of zoisite in honor of Tanzania, where it was first unearthed in 1967. Because the crystals show different colors depending on the viewing direction, cutters can fashion gems with a range of color from violetish blue to bluish violet depending on how much weight they want to retain from the rough.
Tanzanite is a birthstone for December and is also the gem for a 24th anniversary. This phenomenal piece of jewelry features a stunning 5.69 carat Tanzanite surrounded by a double halo of diamonds totaling .83 carats. The setting is 18k white gold and is currently a ring size 6.75 but is sizable for an additional fee.