[Zigurd]

How much mineral and metal grit does one consume on a regular basis? The ceramic material from a ceramic knife blade is, obviously from just looking at it, very small. I bet the amount of grit I've eaten from having a taste for raw oysters vastly outweighs what I'd get from a lifetime of using ceramic knives.

[mapt]

"grit" is usually spherical or close to it, because it has seen chemical and mechanical weathering. It is often calcium crystals of some type.

This is neither. These are long dagger shapes, significantly larger than a diatom, very hard, sharpened to a fine edge.

[tedk-42]

They aren't giving you 'microcuts' in your gut, any more than anything else.

Why? The force applied isn't in a uniform downward direction like you would with a knife.

[dyauspitr]

Grit is shaped differently than ultra sharp shards.