by Jujeh » Jul 9, 2019 I'm crazy for fire / dispersion. It's the main thing I like about diamonds/moissanite/cz. I've recently found out that there's a material called "strontium titanate" that has much more fire than any of those. However, it's only about a 5.5 on the Mohs scale. I want to buy a pendant, but I've never had a faceted gemstone so soft before. I've heard that materials with mohs hardness under 7 will get abraded by dust no matter what you do and the gem will inevitably cloud. It's not terribly expensive so I think it's worth the gamble for me. Does anyone have experience with this? Any other thoughts on this material? Thanks!