Hey, for everyone in the Steven Universe fandom who’s thinking about taking the physical properties of rocks seriously over the new name that appeared for Steven Bomb 3, Sardonyx, here’s a list of all the Silicon Dioxide gems in the show. I split it up into distinct families to the best of my abilities.

Also, sardonyx isn’t a combination of sard and onyx. I feel like there’s a misconception that the white stripes are onyx and the red stripes are sard, which isn’t how it is. The stripes all have relatively the same chemical make up, unlike in jasper where the stripes tend to be mostly different, like clay or hematite.

Chalcedony has a tricky chemical make up, but generally the answer I’ve heard about the separate layers is the density of the pigment.

I don’t have a specific source since I’m just a fucking nerd but you can cross check this with google and ask me about it. Don’t get your information from .coms (like my blog)/.co or metaphysical databases.