Elaeolite

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Physical & Optical Properties

Mohs Hardness 5,5 – 6,0
Specific Gravity 2,55 – 2,67
Crystal System Hexagonal
Luster augite
Color various

Mohs Hardness

Mohs Hardness: 5,5 – 6,0
1 Soft10 Hard

Crystal System

a a c Hexagonal a = b ≠ c, α = β = 90°, γ = 120°

Value & Market

Price Tier Budget (< $50/ct)

About Elaeolite

Elaeolite is the massive, greasy-lustured, oily-appearing variety of nepheline (a feldspathoid mineral), typically exhibiting gray, brownish, greenish, or reddish tones that give it its name from the Greek for 'oil stone.' It forms in alkali igneous rocks such as nepheline syenites, with significant occurrences in Scandinavia and the Kola Peninsula of Russia. Though not a conventional gem, polished elaeolite can display attractive mottled green and gray coloration.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Elaeolite?
Elaeolite is the massive, greasy-lustured, oily-appearing variety of nepheline (a feldspathoid mineral), typically exhibiting gray, brownish, greenish, or reddish tones that give it its name from the Greek for 'oil stone.' It forms in alkali igneous rocks such as nepheline syenites, with significant
What is the hardness of Elaeolite?
Elaeolite has a Mohs hardness of 5.5 to 6.0, making it moderate for use in jewelry.
What color is Elaeolite?
Elaeolite is primarily Various.
How much does Elaeolite cost?
Elaeolite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Elaeolite?
Elaeolite belongs to the Hexagonal crystal system.

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