Sonolite

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Physical & Optical Properties

Mohs Hardness 5.5
Specific Gravity 3.82 – 4.0
Refractive Index 1.763 – 1.793
Crystal System Monoclinic
Luster Vitreous,Dull (Earthy)
Color various

Mohs Hardness

Mohs Hardness: 5.5
1 Soft10 Hard

Crystal System

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

Value & Market

Price Tier Budget (< $50/ct)

About Sonolite

Sonolite is a rare manganese silicate member of the humite group, typically displaying orange-red to pale reddish-brown colors with a vitreous luster in granular to prismatic crystals. It forms in manganese-rich metamorphic skarns and is associated with other manganese silicates in Japan, Sweden, and the United States. While rarely faceted, transparent specimens are sought by collectors of rare manganese-bearing gemstones.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Sonolite?
Sonolite is a rare manganese silicate member of the humite group, typically displaying orange-red to pale reddish-brown colors with a vitreous luster in granular to prismatic crystals. It forms in manganese-rich metamorphic skarns and is associated with other manganese silicates in Japan, Sweden, an
What is the hardness of Sonolite?
Sonolite has a Mohs hardness of 5.5, making it moderate for use in jewelry.
What color is Sonolite?
Sonolite is primarily Various.
How much does Sonolite cost?
Sonolite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Sonolite?
Sonolite belongs to the Monoclinic crystal system.

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