This magnificent 11.54 carat untreated Burma star ruby is beautifully highlighted in this platinum ring. Round brilliant-cut diamonds weighing 3.25 carats surround the cabochon ruby, accentuating the crisp star in the stone’s center. Burma is the traditional home of the finest rubies in the world, and star rubies, particularly those displaying an untreated, naturally vibrant color, are especially rare. Ruby is AGTA certified as being untreated.