Fluorite
| Colour | Purple, Green, Blue, Clear, Red, Yellow, Pink, Brown |
|---|---|
| Mohs hardness | 4 (defining mineral) |
| Lustre | Vitreous |
| Streak | White |
| Crystal system | Isometric |
| Transparency | Transparent to translucent |
| Cleavage | Octahedral, perfect on {111}, parting on {011} |
| Fracture | Subconchoidal to uneven |
| Chemical formula | CaF 2 |
| Specific gravity | 3.175–3.184; to 3.56 if high in rare-earth elements |
What is Fluorite?
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon.
How to identify Fluorite
- Lustre: Vitreous.
- Hardness: Mohs 4 (defining mineral) — soft; a knife will scratch it.
- Streak: White.
- Habit: Isometric crystal system.
Fluorite value
Based on 100 recent eBay sold listings, a raw / cluster Fluorite typically sells for $6–$16 (about $0.02–$0.05 per gram for raw material). After eBay fees a seller nets roughly $9 on a median piece.
| Recently sold | Weight | Sold | Date |
|---|---|---|---|
| 172G AAA Grade Natural Rainbow Fluorite Crystal Quartz Druzy Slice Gem Specimen | 172 g | $15 | 2026-06-22 |
| 790g Natural Fluorite Cluster Crystal Mineral Specimen Energy Healing Reiki | 790 g | $13 | 2026-06-22 |
| 288G Natural Black Rose Fluorite Slice /Fluorescent Glow Under UV Light Healing | 288 g | $8 | 2026-06-22 |
| 216G AAA Grade Natural Rainbow Fluorite Crystal Quartz Druzy Slice Gem Specimen | 216 g | $6 | 2026-06-21 |
| 240G Top!! Natural Rabbit Hair Rutilated Fluorite Quartz Druzy Slice Crystal Gem | 240 g | $6 | 2026-06-21 |
| 1.54LB Top!! Natural Rabbit Hair Rutilated Fluorite Quartz Druzy Slice Crystal | 699 g | $8 | 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.
Fluorite in different forms
Stones often confused with Fluorite
Frequently asked questions
How hard is Fluorite?
Fluorite is Mohs 4 (defining mineral) on the hardness scale.
What colour is Fluorite?
Fluorite is typically purple, green, blue, clear, red, yellow, pink, brown (Colorless, although samples are often deeply colored owing to impurities; Purple, lilac, golden-yellow, green, blue, pin).