three stones round diamond engagement ring 2.6ctw in platinum (size 8.5) luxurman three stones round diamond engagement ring 2.6ctw in platinum. solid platinum, authenticated with a stamp. item weight - 11grams. ring width - 6mm. total diamond weight is 2.6ctw. beautiful gift box is included. all items are shipped fully insured with a signature confirmation from nyc jewelry district. 30 day returns, 1 year warranty