Available Metal Types, 10k -14k -18k Rose, White and Yellow Gold, Platinum – Continuum Sterling Silver – Sterling Silver. Available Stone Shapes, Round, Oval, Square, Emerald, Pear, Marquise, Cushion, Ascher, Heart, Triangle. Available in a variety of primary stone sizes from 1 mm to 20 mm depending on stone shape. Choose from Natural or Lab-Grown Diamonds, Moissanite and a variety of Birthstone Gems. Matching Wedding Bands available in most cases.