Promise - Engagement Ring with Marquis and Round Cut Diamond Accents. Ring is .925 Sterling Silver and the Diamonds are .8cttw. The main stone is a .4ct Marquis Cut White Diamond centered between 4 / .1ct Round Cut White Diamond Accents. We are the Original Owners, and after 7 years of happiness, we are selling it to go towards replacing my wives Wedding/Engagement Ring which was stolen from us 3 days before Valentine's Day earlier this year. We are only asking $60 OBO but are willing to negotiate as long as it goes to a good home!!