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Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO3. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. Rhodochrosite is Argentina's "national gemstone".
Famed for its banding, ranging from light pink to bright red, Argentinian Rhodochrosite is a truly unique gemstone. In ideal specimens of this stone, the banding crosses the surface of the stone in a zigzag pattern, with a sharp contrast between colors.
As you can see the gem can be carved into many shapes, including my favorite (you guessed it) - Penguin.
As with any gem, expect to pay a premium based on the quality of the stone used for the setting. A decent grade stone used in an earring will cost around $125 US at most jewelers. If you are looking for something special for yourself or a gift, you'll want to check these gems out during your visit.
Inca Rose Gems