Pristine is an online artisan gemstone jeweler specializing in precision cut, wholesale loose gemstones and sapphire engagement rings. Known throughout the U.S. and Canada, Rogerio Graca has been cutting colored gemstones for custom jewelry, engagement rings, as well as wedding and vintage-style rings for over 24 years. Rogerio Graca insists on masterful and precision cut gemstones, which put his sapphires in the top 5% of quality cut gemstones in the world.