Ilvaite

A variety of Lawsonite Group

Rare
Ilvaite specimen - rock identification

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.

Ilvaite Market Value Calculator

Estimate the market value of Ilvaite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Ilvaite Localities Map

See where Ilvaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Associated Chakras

Root
Root
Crown
Crown

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

IlvaiteBaddeleyite (of Clarke)Elbaite (of Giesecke)
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