Transparent Pink Calcite occurs in rhombohedral crystals which vary from very pale pink to deep salmon-pink, sometimes also including yellow tones. The most abundant source for these crystals is Mexico. Opaque Pink Calcite has a creamy pink color and is found only in massive form. The pink comes from manganese. The only major source for these stones is Peru. They are available most frequently in free-form tumbled or hand-polished shapes such as spheres and eggs.