I received this ring, with a matching pendant, as a birthday gift from my fiance's parents. I know they belonged to his grandma, but we're not sure what kind of stone it is. It is a beautiful light purple stone that almost glows pink in certain lighting. It is translucent, but not as much as it appears in these pictures. I don't care about the quality, I love it, I'm just curious what the stone might be. Any ideas?