Picchiotti 18ct Rose White Gold 0.61 Carat Diamond Twist Ring. PCH129. Picchiotti 18ct Rose and White Gold ring with pave set diamonds totaling 0.61 carats, with alternating raised twist detailed band. Every piece of Picchiotti jewellery is created in house at their own workshops in Valenza, Italy. With a keen eye for quality, both in craftsmanship and materials, the personal supervision of the Picchiotti family ensures a level of satisfaction which has become legendary. Renowned worldwide as a premier manufacturing company of one-of-a-kind pieces. Picchiotti 18ct Rose White Gold 0.61 Carat Diamond Twist Ring.