Hi, I have a round loose diamond and want to save up for a nice 14k setting...but I found a heavy six prong sterling silver setting that would work with my diamond. I wondered if it could be set temporarily in the sterling setting for maybe six months, while we save up. I thought since it's a six prong setting it might be secure enough for the time being. Or is sterling too soft and it would be risky. Thanks for any input you may have!