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Pollucite is often found in association with petalite (formally known as castorite). It was named after the twin brothers Pollux and Castor in Greek mythology. It is an important source of cesium. Facet grade material is prized by gemstone collectors and can be found in Afghanistan, Pakistan, Russia, and the United States.

Pollucite Polished
Pollucite Classification
Common Name Pollucite
Species Pollucite
Pollucite Optical Properties
Transparency Translucent-Transparent
Dispersion Strength: None
Refractive Index 1.507-1.528
Optic Sign NA
Polariscope Reaction Singly Refractive (SR)
Fluorescence SWUV: Inert to blue green or yellowish white
LWUV: Inert to weak orange
CCF Reaction None
Pollucite Characteristic Physical Properties
Toughness Good
Luster Greasy, Vitreous, Dull
Fracture Conchoidal, uneven
Cleavage None
Pollucite Chemistry & Crystallography
Chemical Name Hydrated Cesium Aluminum Silicate
Chemical Formula (Cs,Na)(AlSi2)O6.nH2O
Crystal System Cubic
Chemistry Classification Silicate

Pollucite Colors

  • Pink Pollucite Pink
  • White Pollucite White
  • Colorless Pollucite Colorless
  • Gray Pollucite Gray
  • Blue Pollucite Blue

Countries of Origin

Myanmar; Afghanistan; Angola; Czechia; Egypt; Madagascar; Kazakhstan; Austria; Sweden; Mozambique; Pakistan; Morocco; China; Russian Federation (the); Brazil; Poland; United Kingdom of Great Britain and Northern Ireland (the); Argentina; United States of America (the); Japan; India; Canada; Norway; Namibia; Finland; Italy; South Africa; Zimbabwe; Australia; Ethiopia


Pollucite is brittle so take care when handling.

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.