Rhodochrosite, is a manganese carbonate mineral.  Red rose coloured, but can be pink to pale brown.  It is Greek rhodon for rose and chrosis for colour.  Also called Rosa del Inca, Inca Rose or Rosinca. Rhodochrosite is formed by the oxidation of manganese ore, and is found in South Africa, China, and the Americas.  Rhodochrosite is Argentina's "national gemstone". Colorado officially named rhodochrosite as its state mineral in 2002. It was first described in 1813 in reference to a sample...

Crazy Lace Agate, nicknamed the "Happy Lace" or "Laughter Stone," is exclusive to the Chihuahua region of Northern Mexico. Its creation story dates back to the Cretaceous period, 65–90 million years ago. This stone is a variety of banded Chalcedony (part of the Quartz family) formed deep within volcanic rocks. It began as layers of silica-rich ash and lava, which were later compacted and cemented into the intricate, patterned rock we see today. Its famous lacy designs and vibrant...

Malachite is a green copper carbonate hydroxide mineral with the chemical formula Cu₂CO₃(OH)₂ . It typically forms in the monoclinic...