Pollucite
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Physical & Optical Properties
Category
Semi-Precious Gems
Mohs Hardness
6.5 – 7.0
Specific Gravity
2.86 – 2.94
Refractive Index
1.517 – 1.525
Crystal System
Isometric
Luster
Vitreous
Cleavage
None
Fracture
Conchoidal
Color
various
Dispersion
0.014
Mohs Hardness
| Mohs | Reference mineral | Pollucite |
|---|---|---|
| 1 | Talc | |
| 2 | Gypsum | |
| 3 | Calcite | |
| 4 | Fluorite | |
| 5 | Apatite | |
| 6 | Orthoclase | |
| 7 | Quartz | ● |
| 8 | Topaz | |
| 9 | Corundum | |
| 10 | Diamond |
Crystal System
Value & Market
Price Tier
Moderate ($50-500/ct)
Where to Buy Pollucite
Blue Nile
Fine jewelry retailer
James Allen
Gemstone jewelry
Brilliant Earth
Ethically sourced gems
Amazon
Wide selection
Links may earn a commission at no extra cost to you.
About Pollucite
Pollucite is a rare cesium-bearing zeolite mineral that typically appears colorless to white or pale pink, with a vitreous luster and good transparency in gem-quality specimens. It is one of the primary natural sources of the rare element cesium and is found in lithium-rich granitic pegmatites in Maine, USA, and Manitoba, Canada. Cut stones are prized by collectors for their rarity rather than brilliance, as the gem is relatively soft.
On this page
Jewelry Use
Durability
6/10
Science FYI Family
Frequently Asked Questions
What is Pollucite?
Pollucite is a rare cesium-bearing zeolite mineral that typically appears colorless to white or pale pink, with a vitreous luster and good transparency in gem-quality specimens. It is one of the primary natural sources of the rare element cesium and is found in lithium-rich granitic pegmatites in Ma
What is the hardness of Pollucite?
Pollucite has a Mohs hardness of 6.5 to 7.0, making it moderate for use in jewelry.
What color is Pollucite?
Pollucite is primarily Various.
How much does Pollucite cost?
Pollucite falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Pollucite?
Pollucite belongs to the Isometric crystal system.