Pink Calcite
Calcite var. Manganoan Calcite · Mineral Specimen and Semi-Precious Decorative Stone
Crystal System
Trigonal, with rhombohedral crystal habit and druzy cluster formation
Mineral Group
Carbonates (Anhydrous Carbonates)
Chemical Formula
CaCO3 (with manganese substitutions)
Formation Process
Hydrothermal and sedimentary processes where calcium carbonate precipitates from mineral-rich aqueous solutions at low to moderate temperatures and pressures
About This Crystal
The specimen features a dense cluster of translucent to transparent rhombohedral crystals exhibiting a soft pale pink to peach coloration, vitreous to pearly luster, and distinct cleavage planes reflecting light across the cluster surface
Physical Characteristics
Pale pink body color, white streak, perfect rhombohedral cleavage in three directions at roughly 75-degree angles, conchoidal to uneven fracture, specific gravity around 2.71, brittle tenacity, and often exhibits pinkish-orange fluorescence under ultraviolet light
Optical Properties
Uniaxial negative with strong birefringence, highly double refractive causing visible doubling of back facets when viewed through transparent crystals, vitreous luster with no significant pleochroism
Hardness & Durability
Origin Region
Prominent sources include Mexico, Peru, Madagascar, and the United States, typically forming in hydrothermal veins and sedimentary limestone caverns
Hardness & Durability
Mohs hardness of 3, making it very soft and easily scratched by a copper penny or knife; poor wearability for rings or daily jewelry due to extreme softness and perfect cleavage
Care & Maintenance
Requires gentle care; clean only with a soft damp cloth using mild soap, avoiding all acids (such as vinegar or lemon juice which will fizz and dissolve the carbonate), ultrasonic cleaners, steam, and prolonged direct sunlight to prevent fading
Rarity & Value
Common to uncommon mineral specimen depending on the intensity of the pink color and cluster formation, with prices generally ranging from affordable to moderate depending on crystal size and aesthetic appeal
Special Characteristics
Notable for its distinct rhombohedral cleavage, strong positive response to UV fluorescence (often glowing pinkish-red), and trace manganese content which imparts the characteristic pink hue
Lore & History
Traditionally used in crystal healing practices as a stone of peace, emotional healing, and heart chakra alignment, believed to soothe anxiety and grief, though these are strictly cultural and historical beliefs rather than scientifically validated claims