A Regal Hawaii Titanium Ring® fit for a King or Queen, with royal purple and gold colors. Perfect gift for the hard to shop for or person who has everything. Sugilite is one of the newest precious gems introduced to the market, discovered in 1944 by Japanese geologist Ken-ichi Sugi. Gem rock quality was not discovered until 1974. Hawaii Titanium Rings® offers five different types of Koa Wood to choose from; Light, Dark, Curly, Fire, and Tiger Koa.