I got these stones from my mother and she had certifacates to tell what they were but I can not find them so I just dont know if they are lab created or natural stones.Lindenwold uses both
I'm going to try and help here. Judging from the fuzzy picture I would say the creamy one is a mexican fire opal and the other one IF it's earth grown is a black opal from Australia. If they are earth grown these are very nice.