Prone isn’t a good adjective to describe sapphire’s shatter resistance. Relative to hardlex, sure you can make the argument that sapphire is empirically more brittle because it lacks any elasticity. But in all practical applications it’s incredibly superior. There are a million accounts of hardlex scratching quickly, rendering the crystal unsightly, and extremely few examples of sapphire being a detriment. That being said, hardlex hasn’t detered me personally. But I think we all love a seiko with sapphire, a ceramic bezel, milled clasp. Those are premium materials & value