Crystopedia
IMA mineral species Healing crystal ✺ Glows under UV

Aragonite

CaCO₃

Carbonate mineral.

RedOrangeYellowBluePinkWhite & Clear

Aragonite specimen
Aragonite 2 Enguidanos.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaCaCO₃
ElementsCa, C, O
Crystal systemOrthorhombic
Mohs hardness3.5 – 4
Density2.93 g/cm³
Streakwhite
Coloryellow, blue, colorless, pink
IMA symbolArg
Nickel–Strunz class5.AB.15

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

✺ Glows under UV

Longwave UV (~365 nm)White to cream
Phosphorescence (afterglow)Phosphorescent

Responses vary by locality. These are for Franklin-area aragonite.

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. More UV-reactive stones →

🌍 Where it's found

Type locality (where it was first described): Mexico

  • 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.

✨ Aragonite family

Aragonite Sputnik
Aragonite SputnikMineral variety
Banded Aragonite
Banded AragoniteMineral variety
Blue Aragonite
Blue AragoniteMineral variety
Brown Aragonite
Brown AragoniteMineral variety
Caribbean Blue Calcite
Caribbean Blue CalciteMineral variety
Cave Aragonite
Cave AragoniteMineral variety
Flos Ferri
Flos FerriMineral variety
Nacre
NacreOrganic gem
Pearl
PearlOrganic gem
Twinned Aragonite
Twinned AragoniteMineral variety
Yellow Aragonite
Yellow AragoniteMineral 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.

Star-like aragonite clusters are associated with patience and acceptance.

Traditional uses
patience, grounding, centering
Chakra
Root
Zodiac
Capricorn
Element
Earth

💞 Pairs well with (traditional pairings)

Petrified WoodBoth carry the theme of patience, so together they're thought to reinforce it. Black TourmalineA natural partner for grounding; Black Tourmaline also adds protection. HematitePaired in tradition for grounding, with Hematite bringing focus as well. JasperBoth carry the theme of grounding, so together they're thought to reinforce it. Clear QuartzLifts and clarifies aragonite's grounding energy; clear quartz is said to amplify any stone.

Learn more