OK..... so all that above.....
Tungsten is EXTREMELY hard, but brittle. It is used for machining bits and such and the bit edges will chip out over time.
Hard is probably a more appropriate word than "Tough". But, it should be tough enough that it should NOT chip just from being dropped. At least not a ring. I would "Assume" the jeweler who sold it should make ammends. If not, I would NOT be happy.
As Kraz said, "porcelain is very hard, harder than steel" and can destroy many knives. Destroying toilets is best left to the mass of a sledge - not the fine edge of softer steel.
But, just the weight of a ring being dropped on a porcelain commode should NOT break your ring.
I have a gold ring and talked a buddy into getting Tungsten. His looks nice. I have considered replacing mine some day. But, I never have any spare money anymore thanks to my addiction / hobby.
Anyway.... What I can't figure out is how you dropped your ring while taking a whiz... I don't really want to know, but ???????????
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