cinnabar (it's a color, can you guess what it is?)
......
Have you guessed? It's red crystalline mercuric sulfide pigment (deep red or scarlet color). I didn't get it right. I believed it was a cinnamon color (like, well, cinnamon!). Oh well...thanks Phrontisery! Don't those cinnabar (the compoundish thing) beads look amazing? I would love to own a strand of them... They're so detailed!
So now, here's the *optional* writing prompt (for those of you coffee shop open mic goers). Where would you find these? In a royal jewelry box? Hidden away beneath the floorboards of a barn (ooh, wouldn't that make a cool story...). You decide.