Powellite

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Physical & Optical Properties

Mohs Hardness 3,5 – 4,0
Specific Gravity 4,23
Refractive Index 1,974 – 1,984
Crystal System Tetragonal
Cleavage Indistinct
Fracture Uneven
Color various
Pleochroism In deeply colored specimens: blue - green

Mohs Hardness

Mohs Hardness: 3,5 – 4,0
1 Soft10 Hard

Crystal System

a b c Tetragonal a = b ≠ c, α = β = γ = 90°

Value & Market

Price Tier Budget (< $50/ct)

About Powellite

La powellita es un molibdato de calcio que forma cristales bipiramidales de color amarillo dorado, amarillo verdoso o incoloro con un lustre adamantino y una fluorescencia amarilla brillante bajo la luz ultravioleta. Se forma en las zonas de oxidación de los depósitos de molibdeno y es especialmente preciada por los coleccionistas por sus deslumbrantes cristales transparentes y su fluorescencia intensa. Las muestras más notables proceden de la India, Rusia y los Estados Unidos.

Jewelry Use

Durability 2/10

Science FYI Family

Frequently Asked Questions

What is Powellite?
La powellita es un molibdato de calcio que forma cristales bipiramidales de color amarillo dorado, amarillo verdoso o incoloro con un lustre adamantino y una fluorescencia amarilla brillante bajo la luz ultravioleta. Se forma en las zonas de oxidación de los depósitos de molibdeno y es especialmente
What is the hardness of Powellite?
Powellite has a Mohs hardness of 3.5 to 4.0, making it relatively soft for use in jewelry.
What color is Powellite?
Powellite is primarily Various.
How much does Powellite cost?
Powellite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Powellite?
Powellite belongs to the Tetragonal crystal system.

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