Phenalope

Phenalope, also known as rhodonite, was related to rhodochrosite due to its manganese content.

Description
These pink to rose-red semi-precious stones could be facet-cut or tumbled smooth. It was found in crystal form or in large non-crystalline deposits that had to be cut in slabs. Folklore said this stone would protect against magical fire. A typical specimen had a base value of 50 gp.