Aragonite
| Colour | White, Brown, Orange |
|---|---|
| Mohs hardness | 3.5–4 |
| Lustre | Vitreous, waxy, resinous |
| Streak | White |
| Crystal system | Orthorhombic |
| Transparency | Transparent to opaque |
| Cleavage | Good on [110], Poor on {110} |
| Fracture | Subconchoidal |
| Specific gravity | 2.94 |
What is Aragonite?
Aragonite is a carbonate mineral and one of the three most common naturally occurring crystal forms of calcium carbonate, the others being calcite and vaterite. It is formed by biological and physical processes, including precipitation from marine and freshwater environments.
How to identify Aragonite
- Lustre: Vitreous, waxy, resinous.
- Hardness: Mohs 3.5–4 — soft; a knife will scratch it.
- Streak: White.
- Habit: Orthorhombic crystal system.
Aragonite value
Based on 100 recent eBay sold listings, a raw / cluster Aragonite typically sells for $17–$123 (about $0.34–$1.03 per gram for raw material). After eBay fees a seller nets roughly $14 on a median piece.
| Recently sold | Weight | Sold | Date |
|---|---|---|---|
| 15G Natural blue texture stone crystal,Heteropolar of Chinese blue aragonite | 15 g | $39 | 2026-06-21 |
| 60G Aragonite Mineral Specimen Crystal Cluster Natural Healing Star Morocco | 60 g | $17 | 2026-06-21 |
| 59G Natural blue texture stone crystal,Heteropolar of Chinese blue aragonite | 59 g | $17 | 2026-06-21 |
| 55G Aragonite Mineral Specimen Crystal Cluster Natural Healing Star Morocco | 55 g | $17 | 2026-06-21 |
| 163G Natural blue texture stone crystal,Heteropolar of Chinese blue aragonite | 163 g | $17 | 2026-06-21 |
| 46G Natural blue texture stone crystal,Heteropolar of Chinese blue aragonite | 46 g | $17 | 2026-06-21 |
Typical recently-sold prices, 2026-06. Condition, size and quality vary widely, so this is an estimate, not an appraisal. See current sold listings on eBay ↗. Full value guide · how we work this out.
Aragonite in different forms
Stones often confused with Aragonite
Frequently asked questions
How hard is Aragonite?
Aragonite is Mohs 3.5–4 on the hardness scale.
What colour is Aragonite?
Aragonite is typically white, brown, orange (Can come in a variety of colors, but commonly red or white).