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. It streaks white, and its Mohs hardness varies between 3.5 and 4. Its specific gravity is between 3.5 and 3.7. It crystallizes in the trigonal system, and cleaves with rhombohedral carbonate cleavage in three directions.

A boy jumps over a puddle of water on the outskirts of Havana, Cuba March 21, 2016. (Photo by Ueslei Marcelino/Reuters)

Australian professional boxer Ebanie Bridges after her fight against Shannon Courtenay during the WBA World Bantamweight Title match at Copperbox Arena in London, Britain on April 10, 2021. (Photo by Andrew Couldridge/Action Images via Reuters)

Portugal's Patricia Mamona competes in the women's triple jump final during the Tokyo 2020 Olympic Games at the Olympic Stadium in Tokyo on August 1, 2021. (Photo by Dylan Martinez/Reuters)

Spanish actress Paz Vega poses on May 14, 2016 as she arrives for the screening of the film “The BFG” at the 69th Cannes Film Festival in Cannes, southern France. (Photo by Alberto Pizzoli/AFP Photo)

A newly hatched chick cuddles up to its mother at Santee Lakes near San Diego, California in May 2023. (Photo by Tammy Kokjohn/Solent News)

In this July 25, 2015 photo, youth eat a cooked pig's head as they wait for the start of carnival in Santiago, Cuba. (Photo by Ramon Espinosa/AP Photo)

An Indian street vendor selling bananas naps on his fruit cart at the roadside in New Delhi on June 3, 2015. (Photo by Money Sharma/AFP Photo)