Creedite Value, Price, and Jewelry Information

Creedite: Chihuahua, Mexico (0.96). Photo © Joel E. Arem, PhD, FGA. Used with permission.


Probably fewer than a dozen creedite gems have ever been faceted. This rare mineral is rarer still as a cuttable crystal. Too soft to wear, this strictly collector’s gem occurs in attractive white, purple, and orange colors.

Creedite Information

Data Value
Name Creedite
Colors Colorless, white, rose to lilac or purple, orange.
Crystallography Monoclinic. Crystals short, prismatic; also radial clusters.
Refractive Index 1.461-1.485
Luster Vitreous.
Hardness 4
Fracture Conchoidal
Specific Gravity 2.71-2.73
Birefringence 0.024
Cleavage Perfect 1 direction
Dispersion Moderate
Luminescence Medium white to cream color (SW); bright white to cream (LW).
Luminescence Present Yes
Luminescence Type Fluorescent, UV-Long, UV-Short
Transparency Transparent to opaque.
Absorption Spectrum Not diagnostic.

Ca­3AI2(SO4)(F,OH)10 • 2H2O.


a = 1.461; β = 1.478; γ = 1.485. Biaxial (-), 2V = 64°.

Optic Sign Biaxial -

After the type locality, Creede Quadrangle, Colorado.


Fluorite-rich hydrothermal mineral deposits.

creedite crystal - Chihuahua, Mexico

“Creedite,” West Camp, Santa Eulalia, Chihuahua, Mexico, 4.3 x 3.2 x 2.7 cm, amethystine colored crystals. © Rob Lavinsky, Used with permission.


Transparent colorless and purple material from Chihuahua, Mexico has yielded rare facetable creedites. In recent decades, new sources have produced more material in more colors, such as orange.


No known synthetics or enhancements.


The classic source for gemmy material, Santa Eulalia, Chihuahua, Mexico produces crystals up to 1 inch long.

Durango, Mexico has produced stunning, bright orange crystals.

Other notable sources include:

  • United States: Darwin, California; Creede, Colorado (in cavities in rock with fluorite and barite); Wagon Wheel Gap, Colorado (in a fluorite-barite mine); Granite, Nevada.
  • Colquiri, Bolivia; China (colorless); Kazakhstan (purple).
creedite - Durango, Mexico.

“Creedite,” Abasolo Mine, Navidad, Durango, Mexico, 5.1 x 4.4 x 4.0 cm. © Rob Lavinsky, Used with permission.

Stone Sizes

Any faceted gems are very small, usually less than 1-2 carats.

  • Private Collection: 0.96 (purple, Chihuahua).


You’re more likely to find creedite gems in a mineral collection, if at all, than a jewelry collection. With perfect cleavage and a low hardness of 4, creedites wouldn’t make durable jewelry stones. A sensitivity to acid makes it inadvisable to wear or handle these gems for long periods. See our gemstone jewelry care guide for cleaning recommendations.

creedite - Kazakhstan

“Creedite,” Akchatau Mine, Karaganda Oblast, Kazakhstan, 3.2 x 2.3 x 1.9 cm. © Rob Lavinsky, Used with permission.

Enter your email to access the Ultimate Opal Buying Guide for free!





Follow us on Facebook