I received a beautiful 3 stone diamond ring for Christmas from my husband. Today I took my son bowling and they had blacklights and music on and one of my stones turned white and cloudy looking in that lighting. In regular light they look identical. It was really strange. Since I don't know much about diamonds I was hoping someone could tell me what that means and if I should try to return it.I know it was bought at Zales. Should I be concerned? Thanks in advance for any help you can give me. Raini