Unique 1/5ct Diamond Promise Ring in Sterling Silver Mounting : 925-sterling sterling-silver Diamond Weight :0.2 ct tw. Center Diamond Weight: 0.1 Diamond Color / Clarity : K-L I2/I3 All purchases from SuperJeweler come with The SuperJeweler Lifetime Guarantee. Your SuperJeweler jewelry purchase includes a lifetime guarantee against the loss of side stones or damage to the jewelry's setting or center stone. It also includes a one-year replacement guarantee against the loss of your jewelry's center stone.