I'm also selling many other accessories and autumn/winter items. Thank you. This is a platinum ring with a twisted design, and the center stone is a rare gemstone called Paraiba tourmaline. Diamonds are set around it. The inside of the ring is stamped with PT900. It is a used item with few uses. There is no appraisal certificate. #PlatinumDiamondRing #ParaibaTourmaline