Ilvaite
A variety of Lawsonite Group
What is Ilvaite?
When studied under different light sources, ilvaite will almost magically change colors depending on how you look at it. It isn't the dull black gem that you might think! It was first found on Elba Island off the coast of Italy back in 1811.
Etymology & Origins
Ilvaite was first described in 1811 on the island of Elba and the name ilvaite from the Latin name ilva of the island. Sometimes referred to as yenite.
Healing Properties
Ilvaite is believed to help build patience, perseverance, and stabilization. It is a powerful stone that helps to remove negative energy and uses its positive energy to enhance creativity and encourage innovative ideas. It may help an individual in areas of motivation, providing them with the necessary energy to keep going, even when things become difficult.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ilvaite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Ilvaite Localities Map
See where Ilvaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Associated Chakras
Key Characteristics
Characteristics of Ilvaite
Both manganese and magnesium substitute in the structure. Ilvaite crystallizes in the monoclinic system in black prismatic crystals and columnar masses. It is black to brownish black to gray and opaque. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. Ilvaite is structurally related to lawsonite.
Formation of Ilvaite
It occurs in contact metamorphic rocks and skarn ore deposits. It also occurs less commonly in syenites.
Quick Facts
Physical Properties
- Color
- Iron-black, dark grayish black
- Hardness (Mohs)
- 5.5 - 6
- Density
- 4.064 g/cm³
- Streak
- Black, inclining to green, brown
- Luster
- Sub-metallic
- Crystal System
- Orthorhombic
Chemical Properties
- Chemical Formula
- CaFe3+Fe2+2(Si2O7)O(OH)
- Elements
- Ca, Fe, H, O, Si
Also Known As
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Ilvaite FAQs
How do I identify Ilvaite?
Ilvaite can be identified by its hardness of 5.5 - 6 on the Mohs scale, Iron-black color, Sub-metallic luster, Orthorhombic crystal system. Look for these key characteristics when examining specimens.
What color is Ilvaite?
Ilvaite typically appears in Iron-black, dark grayish black. Color can vary depending on impurities and formation conditions.
How hard is Ilvaite?
Ilvaite has a hardness of 5.5 - 6 on the Mohs scale. This gives it moderate hardness.
What is the characteristics of ilvaite of Ilvaite?
Both manganese and magnesium substitute in the structure. Ilvaite crystallizes in the monoclinic system in black prismatic crystals and columnar masses. It is black to brownish black to gray and opaque. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. Ilvaite is structurally related to lawsonite.
What is the formation of ilvaite of Ilvaite?
It occurs in contact metamorphic rocks and skarn ore deposits. It also occurs less commonly in syenites.
