Rhodonite is a manganese mineral known for the rosy color for which it is named (from the Greek rhodos, which means rosy).
The rhodonite crystals are the pinkish areas, while the blackish material around it (in geology this is called the matrix) is a manganese oxide.
Manganese ions provide pink coloring in many chemicals and minerals in nature. But rhodonite can also rarely occur in reds, greys, and yelrows depending on the presence of other elements. Calcium rich varieties are called bustamite, and zinc-rich are called fowlerite.
A cousin of rhodonite, pyroxmangite is identical in chemical composition, but formed under very different conditions.
Rhodonite is uncommon on Earth and large crystals are especially rare. It has few uses outside of geological study and jewelry. Rhodonite is the official gem of the US state of Massachusetts.
Measurement: 1" and up
You will receive one specimen similar to the ones shown in the pictures. Larger specimens will be prioritized first.