14/10/2026
🌟 All About Rhodochrosite 🌟
Rhodochrosite is a beautiful pink to red coloured manganese carbonate mineral that holds the title of the National Gemstone of Argentina and is also the state gemstone of Colorado. It is found in hydrothermal ore veins in association with other minerals such as Gold, Silver, Sphalerite, Pyrite and Quartz, and in the past has been used as an indicator for these precious metals.
The colouration of Rhodochrosite is caused by manganese, and when some manganese is replaced by iron, magnesium or calcium, this dulls the colour and tinges it more brown, white or grey. This colour is also where the name originally came from - with ‘rhodo’ meaning rose, and ‘chros’ meaning colour from Greek, so literally translating to ‘rose coloured’.
Rhodochrosite is a crystal that has history dating back to the 13th century in Argentina with the Incas, having been found as funeral jewellery in tombs, and with Incan myths telling that it was the solidified blood of their kings and queens.
As well as Argentina, Rhodochrosite has been found all over the world in modern times, including Peru, Bulgaria, China, Mexico and the world class crystals found in the USA and South Africa. Rhodochrosite from Argentina often has a distinctive banded pattern, leading to the tongue in cheek nickname of “forbidden bacon”. Argentina is also home to fantastic stalactite formations of Rhodochrosite, that reveal beautiful patterns when sliced and polished.
I can’t write an article on Rhodochrosite without mentioning the famous Sweet Home Mine in Colorado, origin of the world’s largest Rhodochrosite single crystal, the Alma King, which measures in at an incredible 15cm and was sold for $800,000 and now resides in the Denver Museum of Natural History. The Sweet Home Mine was not originally intended as a Rhodochrosite mine however - back in 1873 when the mine originally opened, it was a silver mine, and the Rhodochrosite was largely ignored. The silver had run out by 1967, and it closed, and was reopened in 1991 not for it’s silver - but this time for the Rhodochrosite crystals, which had found popularity with collectors across the world.
Rhodochrosite is one of those crystals that can look very different from different localities - with the juicy deep red rhombs of Colorado, the scalenohedral cryatsls of South Africa, the bubbly formations from Bulgaria and Mexico, to the famous banded “bacon” of Argentina.
All images from Mindat, showing different formations of Rhodochrosite from around the world.