Phenalope

Phenalope is better known outside the Realms as rhodonite and is related to rhodochrosite due to its manganese content. It is pink to rose-red in color and can 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 50gp.