Coprolites

Coprolite is the scientific name for fossilized poop. Turns out you can polish a turd, you just need to wait several million years, get a stone cutter, and some mineral oil. Coprolites make excellent gifts for significant others and family members. As the poop fossilizes, minerals seep into the material, interacting with the plant or bone matter within, often forming stunning reds, yellows, and sometimes blues and purples depending on the minerals and composition involved.