This Simon G. ring is available in either 18k gold or platinum. Pictured here in two-tone yellow/white gold with yellow diamonds, ring is also available in all white gold, platinum, or two-tone rose/white gold with pink diamonds. Total diamond weight in the ring is 1.37 carats. Goldsmith Gallery is a certified Antwerp Diamond Importer and we would be happy to provide you with options for the center stone should you desire. In most cases, Simon G. rings must be made to order. Please allow 4-6 weeks.