How much does Magnetite cost?

Magnetite is an iron oxide that holds a unique place in human history - it's the most magnetic naturally occurring mineral on Earth. Certain specimens, called lodestones, are permanently magnetized and will attract iron filings and deflect compass needles. The discovery of lodestone's magnetic properties led directly to the invention of the magnetic compass, which enabled the Age of Exploration.

Magnetite forms in igneous, metamorphic, and sedimentary environments. In igneous rocks, it crystallizes directly from magma as an accessory mineral. In banded iron formations (2-3 billion years old), it's a major component alongside hematite, recording the oxygenation of Earth's atmosphere. Magnetite also forms through biological processes - magnetotactic bacteria synthesize microscopic magnetite crystals that function as biological compasses.

Not all magnetite is magnetic enough to be called lodestone. Lodestone's permanent magnetism is thought to come from lightning strikes that magnetize surface-exposed magnetite, aligning the magnetic domains permanently. This means lodestones are literally created by lightning.

Identification Guide

Magnetite is identified by its black color, metallic luster, black streak (distinguishing it from hematite's red-brown streak), hardness of 5.5-6, and magnetic properties. A simple magnet test is diagnostic - magnetite is attracted to magnets, and lodestone specimens attract iron.

Distinguish from hematite (red-brown streak vs black), ilmenite (non-magnetic, different crystal form), and chromite (slightly different streak). The magnetic test is the fastest and most reliable identification method.

Spotting Fakes

Natural magnetite is abundant and inexpensive, so faking is unnecessary. However, 'magnetic hematite' beads (which are actually synthetic barium-strontium ferrite ceramic, not hematite or magnetite) are ubiquitous in the crystal market. These manufactured beads are very strongly magnetic - much more so than natural magnetite - and have no geological origin. Real magnetite specimens have natural crystal faces or rough surfaces, not the perfect polished spheres of synthetic material.

Some links in this post go to Amazon. Crystal Almanac earns a commission from qualifying purchases at no extra cost to you. Tools recommended here are ones we would use ourselves to run the tests described - the recommendation comes first, the link is downstream of it.

Verify Magnetite Before You Buy

Affiliate picks

Magnetite gets imitated with glass, dyed stand-ins, and cheaper lookalikes. These four tools run the checks in the Spotting Fakes section above, so you can tell real from fake before you pay - online, at a show, or in a shop.

10x triplet jeweler's loupe$20-40
The first tool worth owning. Round gas bubbles (glass), dye pooled in cracks (dyed howlite, magnesite, agate), and flow lines are invisible to the naked eye and obvious at 10x. A triplet lens keeps the edges sharp.
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Mohs hardness pick set~$40
Calibrated picks settle the cheap swaps in seconds - howlite (3.5) sold as turquoise (5-6), glass (5.5) sold as quartz (7). Faster and more accurate than the fingernail-and-knife method.
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0.01g digital pocket scale~$15
Density catches what the eye misses. A glass 'quartz' weighs suspiciously light; lead-loaded plastic 'lapis' weighs suspiciously heavy. Weigh, compare to the known density, and flag the mismatch before the money leaves your hand.
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365nm UV flashlight$20-30
Many stones have a distinctive fluorescence (hyalite opal, fluorite, ruby, scheelite). A longwave UV light is the fastest tiebreaker when a piece passes the other tests but still looks off.
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Cultural & Metaphysical Traditions

Presented as cultural traditions, not scientific evidence

Lodestone has been used in folk magic and spiritual practice for millennia. In Hoodoo/Rootwork tradition (African American folk magic), lodestones are 'fed' with iron filings and used to attract luck, money, and love - one of the most important and continuously practiced uses of minerals in any magical tradition. Ancient Greeks called magnetite 'the bone of Horus' and attributed it to the gods. Chinese geomancers used lodestone compasses for feng shui centuries before Western navigation adopted the compass.

Metaphysical and “healing” associations are cultural traditions, not medical advice or scientific fact. Crystals are not a substitute for professional medical care.

ChakraRoot ZodiacAries ZodiacVirgo ElementEarth

Where It's Found

Sweden - Kiruna

Massive iron ore deposits, world-class

South Africa - Bushveld Complex

Major deposits associated with platinum mining

United States - Utah (Iron Springs), New York (Adirondacks)

Historic mining, good crystal specimens

Bolivia - Various

Naturally magnetic lodestone specimens

Price Guide

Entry$2-8 tumbled

Mid-Range$5-30 crystal specimens

Collector$10-80 natural lodestone (attracts iron)

Good to Know

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Scratch test: At hardness 5.5, Magnetite resists scratching from a knife but can be scratched by quartz. Best for pendants and earrings rather than rings.

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Global supply: Found in 4 notable locations worldwide, from Sweden to Bolivia.

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Heft test: With a specific gravity of 5.18, Magnetite feels surprisingly heavy for its size. This weight is actually a useful identification tool.

Care & Safety

What magnetite can and cannot tolerate, based on its hardness (Mohs 5.5) and chemistry (Fe₃O₄).

Can Magnetite go in water?

Not recommended. Magnetite can react with water, absorb moisture, or degrade with wet contact. Clean it with a dry or barely damp cloth and dry it immediately.

Can Magnetite go in salt water?

No. Magnetite should stay away from water in general, and salt water is worse on every count: dissolved salt is corrosive while the stone is wet, and abrasive salt crystals are left behind in cracks and crevices as it dries. Magnetite's iron content also makes rust staining likely if salt residue sits on the surface.

Water safety for every stone →Full crystal care guide →