Crystopedia
IMA mineral species Healing crystal ✺ Glows under UV

Calcite

CaCO₃

Carbonate mineral.

YellowBrownWhite & Clear

Calcite specimen
Calcite (Mexique) .jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaCaCO₃
ElementsCa, C, O
Crystal systemTrigonal
Mohs hardness3.04
Density2.72 g/cm³
Streakwhite
Color—
IMA symbolCal
Nickel–Strunz class5.AB.05

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

✺ Glows under UV

Longwave UV (~365 nm)Highly variable: red, pink, cream, white, yellow, blue or violet
Shortwave UV (~254 nm)Typically bright orange-red (Franklin, NJ)
Phosphorescence (afterglow)Brief red-orange phosphorescence is common in Franklin calcite

Calcite's colour under UV varies more than almost any other mineral, and it can change with the UV wavelength. Manganese is a common activator.

Reactions vary by locality and specimen; many specimens of a fluorescent species do not glow. Shortwave UV can burn skin and damage eyes. Wear UV-blocking glasses, and never look into any UV lamp. Sources: Franklin Mineral Museum fluorescent mineral checklist · Wikipedia: Calcite. More UV-reactive stones →

🌍 Where it's found

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

✨ Calcite family

Black Calcite
Black CalciteMineral variety
Blue Calcite
Blue CalciteMineral variety
Calcite Geode
Calcite GeodeGeode / nodule
Caribbean Blue Calcite
Caribbean Blue CalciteMineral variety
Cobaltocalcite
CobaltocalciteMineral variety
Dogtooth Calcite
Dogtooth CalciteMineral variety
Green Calcite
Green CalciteMineral variety
Honey Calcite
Honey CalciteMineral variety
Iceland spar
Iceland sparMineral variety
Lemon Calcite
Lemon CalciteMineral variety
Manganoan calcite
Manganoan calciteMineral variety
Mango Calcite
Mango CalciteMineral variety
Merkabite Calcite
Merkabite CalciteMineral variety
◆
Nailhead sparMineral variety
Orange Calcite
Orange CalciteMineral variety
Rainbow Calcite
Rainbow CalciteMineral variety
Red Calcite
Red CalciteMineral variety
Satin Spar
Satin SparMineral variety
Stellar Beam Calcite
Stellar Beam CalciteMineral variety

Varieties & related stones

✨ Metaphysical & Folklore

These are traditional and folk beliefs from crystal lore. They are not scientific or medical claims – crystals are not a substitute for professional care.

In its many colors, calcite is traditionally an energy amplifier and cleanser.

Traditional uses
energy cleansing, motivation, learning
Chakra
Sacral Solar Plexus Crown
Zodiac
Cancer
Element
Water, Fire

💞 Pairs well with (traditional pairings)

CarnelianA natural partner for motivation; Carnelian also adds creativity. SelenitePaired in tradition for cleansing, with Selenite bringing peace as well. AmberShares the Sacral & Solar Plexus chakra; adds warmth to calcite's energy cleansing. CitrineAnother Solar Plexus & Sacral chakra stone, used alongside calcite for prosperity rituals. Smoky QuartzA grounding root stone to balance calcite's high, spiritual energy.

Learn more