http://rubies.work/0536-sapphire-ring/ Tiffany &amp; Co. Schlumberger Indicolite Tourmaline Gold Ring. This 3.68 carat cushion cut indicolite tourmaline is the velvety blue/green color of a royal peacock. Mounted atop four 18 karat yellow gold organically intertwined gold ropes, this precious gemstone&#x27;s color is dreamy to look at and magical to wear