Rhodochrosite & Rhodonite
Rhodonite has a rosy pink to bright red color with black veins, while rhodochrosite can be any shade of pink to red and can even have gray in it. Both minerals are used in jewelry, and can be found in many different locations
Rhodochrosite is extremely rare as well-formed crystals. One of the few locations in the world where they are found is the Sweet Home Mine, near Alma, Colorado.