Yellow Calcite
Calcite · Mineral Specimen and Decorative Stone
Crystal System
Trigonal, typically forms rhombohedral crystals and massive tumbled shapes
Mineral Group
Carbonates
Chemical Formula
CaCO3
Formation Process
Sedimentary or hydrothermal precipitation from calcium-rich solutions at low temperatures and pressures
About This Crystal
A tumbled cubic or rhombohedral stone of warm yellow-orange hue, displaying translucent to opaque clarity with a waxy to vitreous luster
Physical Characteristics
Yellow color with white streak, perfect rhombohedral cleavage in three directions, conchoidal fracture, specific gravity around 2.71, brittle tenacity
Optical Properties
Uniaxial negative with strong birefringence, exhibiting noticeable double refraction when transparent
Hardness & Durability
Origin Region
Mexico, Madagascar, Brazil, and USA; found in sedimentary and hydrothermal environments
Hardness & Durability
Mohs hardness of 3, very soft, perfect cleavage makes it vulnerable to impacts and unsuitable for daily wear jewelry
Care & Maintenance
Clean with mild soap and warm water; avoid harsh chemicals, acids, prolonged sun exposure, and ultrasonic cleaners
Rarity & Value
Common mineral worldwide, affordable price range depending on size, shape, and clarity, rarely treated
Special Characteristics
Strong double refraction, can exhibit fluorescence under ultraviolet light
Lore & History
Associated with the solar plexus chakra, traditionally believed to enhance mental clarity, confidence, and energy renewal