I’m new to the MMD world and I’m strongly considering upgrading my mined center to MMD. I have a 3 stone set and I intend to reset to the same style. My side stones are .31 ct each and the MMD will replace a .67 ct center. I want to go up to .90-1.1ct. Any advice on how to search for a stone? From the very little research I’ve done, mined and MMD look the same so this shouldn’t be a difficult task, right?