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TL;DR — Pyrite is iron disulfide, FeS₂, a cubic mineral with a specific gravity of about 5 and a hardness of 6 to 6.5. Two properties do nearly all the identification work: it is extremely heavy for its size, and its streak is greenish-black to brownish-black, not gold. The common substitutes are goldstone (a man-made glass with copper flakes), gold- or brass-coated hematite, chalcopyrite, resin with metallic pigment, and — for pyramids and large shapes — resin castings with pyrite chips embedded. The float test is meaningless here, the spark test is a party trick, and a strong magnet response means you are not holding pyrite. Below: what the fakes are, the checks that work, and why a "certificate" on a cheap mineral usually means very little.
Pyrite is the odd one out in this whole subject, because it is genuinely cheap. Iron pyrite is one of the most abundant sulfide minerals on earth; nobody needs to fake it to save money on the raw material. Yet fake pyrite is everywhere in the Indian market, and the reason is that pyrite is now sold in finished forms — bracelets, pyramids, trees, frames — where the manufacturing cost dwarfs the mineral cost, and where a gold-coloured substitute is far easier to bead, cast and polish than a brittle sulfide. So this is not really a fraud about mineral value. It is a fraud about what you are wearing on your wrist and keeping on your desk. New to the material? Start with our complete pyrite guide.
What genuine pyrite actually is
Pyrite is iron disulfide, FeS₂ — one atom of iron to two of sulfur. It crystallises in the isometric, or cubic, system. That single fact about its crystal system explains most of what a real specimen looks like, and most of what a fake fails to reproduce.
| Property | Pyrite | Why it matters to a buyer |
|---|---|---|
| Composition | FeS₂, iron disulfide | A sulfide, not a metal. It will oxidise in damp conditions. |
| Crystal system | Isometric (cubic) | Natural specimens form cubes, pyritohedra (twelve pentagonal faces) and octahedra with flat, mirror-bright faces. |
| Hardness | 6 to 6.5 on the Mohs scale | Harder than window glass and harder than a steel knife blade. This separates it from chalcopyrite and from gold. |
| Specific gravity | About 4.9 to 5.2 | Roughly twice the density of quartz and about twice that of glass. The heft is the most reliable field test there is. |
| Streak | Greenish-black to brownish-black | The classic diagnostic. Gold streaks gold. Pyrite does not. |
| Lustre and colour | Metallic; pale brass-yellow, often with a slightly greenish cast | Paler and cooler than gold, and paler than chalcopyrite's deeper yellow. |
| Tenacity | Brittle; uneven to conchoidal fracture | It powders and chips. Gold dents and smears. This is why it is "fool's gold" and how prospectors told the difference. |
| Magnetism | Not attracted to an ordinary magnet | A bracelet that jumps to a fridge magnet is not pyrite. |
Two visual features are worth learning because they are close to conclusive when present. The first is striations on cube faces: fine parallel lines etched into each flat face, and — the diagnostic part — the striations on any face run at right angles to those on the faces next to it. This is an artefact of how the crystal grows and is very difficult to imitate. The second is the pyritohedron, a twelve-sided form with pentagonal faces that looks almost manufactured. No one making a fake bothers with either, because they are hard to mould and buyers do not know to look.
Pyrite in the Indian market is used in Vastu practice and is traditionally kept in homes and workplaces; how and where it is customarily placed is covered in our guides on where to keep a pyrite pyramid and pyrite frame placement. Those are matters of tradition and custom; this page is about the mineral.
What the fakes are actually made of
Six substitutions cover almost everything sold as pyrite in India, and which one you meet depends heavily on the format.
| Substitute | What it is made of | How it gives itself away |
|---|---|---|
| Goldstone (aventurine glass) | A man-made glass with tiny copper crystals grown inside it. Not a mineral at all, and not related to pyrite in any way. Also widely mis-sold as "sunstone". | The commonest fake in bracelets. It is transparent brown glass with discrete metallic flakes suspended in it — hold a bead against a strong light and you will see through the matrix between the flakes. It is much lighter than pyrite, warms in the hand within seconds, has a glassy rather than metallic lustre, and shows no crystal faces. |
| Coated or electroplated beads | Hematite, magnetite composite, glass or ceramic beads with a gold, brass or titanium-coloured vacuum coating | Look at the drill hole under a loupe. Coatings wear and chip at the hole and at the contact points between beads, showing grey, black or white underneath. A coating also produces an unnaturally even mirror finish across every bead — real pyrite beads vary. |
| "Magnetic hematite" and ferrite composites | Powdered iron oxide bound with resin and magnetised, then coated | It sticks to a magnet, strongly. Pyrite does not. This one is trivially easy to catch and surprisingly common in cheap bracelets. |
| Chalcopyrite | Copper iron sulfide, CuFeS₂ — a genuine mineral, and often sold honestly as "peacock ore" | A real mineral being sold under the wrong name. It is a deeper, more golden yellow, frequently carries an iridescent blue-purple tarnish, and it is much softer — about 3.5 to 4 on the Mohs scale, so a steel blade scratches it easily where pyrite resists. It is also lighter, at a specific gravity around 4.2. |
| Resin with metallic pigment or glitter | Polyester or epoxy resin loaded with bronze powder, mica or gold glitter | Very light for its size, warms instantly, and shows a mould seam or flash line. Under a torch you may see trapped bubbles. Common in cheap pyramids, trees and figurines. |
| Reconstituted and chip-embedded castings | Real pyrite ground to powder or chips and set in a resin binder, then cast into a pyramid, sphere or plate | The most deceptive format, because there really is pyrite in it. The tell is weight and structure: a solid pyrite pyramid is startlingly heavy, while a resin casting is not, and a cut face on a casting shows chips floating in a matrix rather than continuous mineral. Sold as "pyrite" without the word "reconstituted" anywhere. |
There is a seventh case that is not fraud but is worth knowing: marcasite. It has the same chemistry as pyrite, FeS₂, but crystallises in the orthorhombic system instead. It is paler, and it is notoriously unstable — it oxidises, crumbles and produces an acidic efflorescence. Material sold as pyrite that develops a white or yellow powder and a sulfurous smell within months is often marcasite or a poorly stored pyrite going the same way.
Tests that actually work
1. Heft it — the single most useful check
Pyrite has a specific gravity of about 5, which means a piece of pyrite weighs roughly twice what an identical piece of quartz or glass would. This is not a subtle difference; it is immediately obvious in the hand. Pick up the piece and pick up something of similar size that you know — a quartz crystal, a glass paperweight, a wooden bead. If the "pyrite" does not feel conspicuously heavier, it is not pyrite. This one test eliminates goldstone, resin and most coated beads in about two seconds, and it is the reason a large pyrite pyramid should be difficult to hold in one hand.
2. The streak test
This is the classic mineralogical identification and it is worth doing properly. Take the unglazed back of a ceramic tile, or the rough underside of a porcelain plate, and drag the specimen firmly across it. Pyrite leaves a greenish-black to brownish-black line. Gold leaves a gold line. Goldstone and glass leave a white line or none at all, because they are harder to powder and produce colourless dust. Coated beads leave the colour of whatever is under the coating. The mark is a few millimetres long and you should do it on an inconspicuous edge or on a loose chip, not on a display face — but the information it gives is close to conclusive, and no other quick test comes near it.
3. Hardness, done carefully
Pyrite sits at 6 to 6.5, which puts it above window glass (about 5.5) and above an ordinary steel knife blade. So genuine pyrite will scratch glass and will not be scratched by a steel blade. That combination is the useful part, because chalcopyrite — the mineral most often sold under pyrite's name — sits at 3.5 to 4 and is scratched by a blade instantly. Do this on a hidden surface, and understand what it does not tell you: plenty of other things scratch glass, so scratching glass alone proves nothing. It is the pair of results together that carries information.
4. Look for crystal faces and striations
On raw specimens, examine the piece for flat, mirror-bright faces meeting at clean angles — cubes, or the twelve-faced pyritohedron. Then look for fine parallel striations on those faces, and check whether the striations on one face run perpendicular to those on the adjacent face. That right-angle relationship is characteristic of pyrite and is essentially never present on a moulded or cast imitation. On tumbled or beaded material you will not see this, which is why raw pyrite is much easier to verify than a bracelet.
5. Magnet check — as a rejection test only
Pass an ordinary magnet close to the piece. Pyrite is not attracted to it. If the piece jumps, sticks or drags, you are almost certainly holding a magnetised ferrite composite — the material commonly sold as "magnetic hematite" — or magnetite. Note the direction of the logic: a magnet response rejects. No response does not confirm, because goldstone, glass and resin are also non-magnetic.
6. Loupe the drill holes and the contact points
On a bracelet this is the most productive single minute you can spend. Under a 10x loupe, look at the inside edge of the drill hole and at the flat spots where beads have rubbed against each other. A coating chips, wears thin and reveals a different colour underneath. A resin bead shows a faint seam. Goldstone shows discrete copper platelets suspended in a transparent brown medium rather than a continuous metallic surface. Genuine pyrite beads show a granular, slightly uneven metallic surface with small pits.
7. Thermal feel and tarnish behaviour
Pyrite is cool to the touch and takes a noticeable moment to warm, because it is dense. Glass warms faster; resin warms almost instantly. This is a supporting observation rather than a test. Separately, genuine pyrite does tarnish over time in humid air, developing a duller, browner or slightly iridescent film. A piece that has been in circulation for years and still looks like new brass has probably been lacquered — which is legitimate, but should be disclosed, because a lacquer coat also hides the surface you would otherwise be examining.
8. Examine large shapes for a cut face
For pyramids, spheres, plates and frames, look at the base or an edge where the material has been cut and not polished. Solid pyrite shows continuous mineral, often with visible crystal boundaries and small vugs. A reconstituted casting shows discrete chips or grains floating in a matrix of a different colour and texture. If the base has been felted over so you cannot see it, ask why.
Tests that do not work, and why
The water and float test
It tells you nothing at all here. Pyrite sinks, glass sinks, resin usually sinks, metal sinks, hematite sinks. Every candidate material in this comparison is denser than water. The float test is useful only for separating things from things that are lighter than water, and there is nothing in this category that is. Skip it entirely.
The spark test
It is true that pyrite struck hard against steel throws sparks — that is where the name comes from, from the Greek pyr, fire, and it was genuinely used in early firearm mechanisms. It is also useless to a buyer. It needs a hard, deliberate strike that damages the specimen; you cannot do it to a polished bracelet or a display pyramid; several hard minerals including quartz and flint will spark against steel as well; and a failure to spark tells you nothing because the technique matters more than the material. It is a demonstration, not a test.
"It scratches glass, so it is real"
Half a test presented as a whole one. Quartz scratches glass. Topaz scratches glass. Hardened steel scratches glass. Coated hematite scratches glass. The scratch result only means something in combination with the reverse check — that a steel blade does not scratch it — and even then it only separates pyrite from softer imitations, not from harder ones.
The magnet test as proof of authenticity
Frequently stated backwards. Some sellers claim real pyrite is magnetic and demonstrate it with a composite bead. Pyrite is not attracted to an ordinary magnet. Attraction is evidence against, never evidence for.
The vinegar, lemon and "rub on paper" tests
The vinegar test is borrowed from carbonate identification and does nothing useful on a sulfide at household concentrations. Rubbing on paper is borrowed from gold testing. Neither distinguishes pyrite from goldstone, coated hematite or resin, which are the three things you actually need to distinguish it from.
The "real pyrite is perfectly shiny" claim
Backwards. Uniform, flawless mirror shine across every surface is more consistent with a coating or a lacquer than with a natural sulfide. Real pyrite has pits, granularity and variation, and it tarnishes with age.
What a certificate does and does not prove for pyrite
Here is an honest position that most sellers will not give you. Pyrite is not a gemstone, and it is very rarely laboratory tested. Gemmological laboratories can identify it without difficulty — specific gravity, X-ray diffraction and Raman spectroscopy all settle it immediately — but nobody sends a five-hundred-rupee bracelet for analysis, because the test costs more than the object.
That means the "certificate" attached to most pyrite sold in India is a seller-issued document, not a laboratory report. It may be perfectly sincere. It is not third-party evidence. Three practical consequences:
- Read the letterhead. If there is no named laboratory, no report number and no stated method, you are reading a marketing document. That is not automatically dishonest, but it is not verification.
- Certificates do not cover claims about outcomes. No laboratory tests devotional or Vastu efficacy, and any document implying otherwise is misrepresenting what a laboratory does.
- Our own position, stated plainly. Divine Hindu holds government laboratory certification for Karungali ebony wood only. We do not claim it for pyrite, for crystals, for gemstones or for rudraksha, and we would rather say so than let a general impression do the work. Our approach across categories is on the lab certification page.
For pyrite specifically, the physical checks above are more useful to you than any paperwork, and they cost nothing.
Price as a signal: what "too cheap" means for pyrite
Because raw pyrite is abundant and inexpensive, price works differently here than it does for rudraksha or ebony. You are mostly paying for cutting, drilling, polishing and shipping weight — not for rarity. So a low price is not automatically suspicious. What is suspicious is a price that does not account for the weight.
| What you see | What it usually means |
|---|---|
| A large "pyrite pyramid" at a low price with free shipping | Weight is the giveaway. Solid pyrite is dense and expensive to ship. A big cheap pyramid is usually resin, or a resin casting with chips in it. |
| A bracelet with perfectly uniform mirror-gold beads | Coated or goldstone. Real pyrite beads are granular and vary bead to bead. |
| Bright rainbow iridescence across the whole piece | Usually chalcopyrite or a titanium-style coating. Pyrite tarnish is subtler and browner. |
| "Pyrite" that is also described as sunstone or goldstone | Three different materials being used as synonyms. Two of them are glass. |
| A very high price justified only by energy claims | Pyrite is a common mineral. Nothing about it justifies a premium except size, quality of crystal form and workmanship. |
| Weight not stated anywhere on the listing | For a dense mineral this is the number that matters most. Ask for it. |
What to ask a seller
- What is the weight of this piece in grams? The single best question for pyrite, and the one that catches resin castings.
- Is this solid natural pyrite, or reconstituted pyrite in a binder? Ask it in exactly those words.
- Has it been coated, lacquered or electroplated? A protective lacquer is reasonable on pyrite, which oxidises. Undisclosed plating is not.
- Is this pyrite or chalcopyrite? Both are real minerals; only one is what you are buying.
- Can you send a photograph of the unpolished base or a cut edge? This shows chips-in-matrix if there are any.
- If there is a certificate, which laboratory issued it and what is the report number? Expect an honest "it is our own document" — which is a better answer than a vague one.
- What is the return policy if the piece sticks to a magnet or fails a streak test?
Where fakes enter the market
- Bulk bead imports. Goldstone and coated beads are manufactured at industrial scale for costume jewellery and enter the spiritual market through bead wholesalers who label by appearance rather than by material.
- Cast decor items. Pyramids, trees, spheres and tortoises are moulded far more cheaply than they are cut, and casting is where reconstituted material dominates.
- Open marketplaces. "Pyrite", "goldstone" and "sunstone" are used interchangeably in listing titles to catch more searches, and the photographs are frequently generic.
- Combo and gift boxes, where a mixed bracelet contains one or two genuine stones and the rest are dyed or coated.
- Social video selling, where the on-camera demonstration is almost always the spark test or a magnet — the two tests least able to answer the question.
- Exhibition and fair stalls, where there is no return address and no seller-specific photograph to compare against.
A five-minute check when the parcel arrives
- Weigh it, on a kitchen scale if you have one, and compare against the listing. Density is your best friend here.
- Hold it against something of known material and similar size. Pyrite should feel roughly twice as heavy as glass.
- Pass a magnet over it. Any attraction and it goes back.
- Streak an inconspicuous edge on unglazed ceramic. Greenish-black to brownish-black.
- Loupe the drill holes on a bracelet for chipped coating, and the bead contact points for wear-through.
- Hold a bead to a bright light. If you can see through the matrix between metallic flecks, it is goldstone.
- Look at the base or cut edge of any pyramid or sphere for chips suspended in a binder.
- Check for a steel-blade scratch on a hidden face. Pyrite resists; chalcopyrite does not.
- Compare bead to bead. Natural material varies; coatings do not.
- If two or more checks fail, return it inside the window.
The same problem in other materials
Pyrite is usually bought as part of a set rather than alone, and the stones it is beaded with have their own substitution problems — most of them worse. Our companion guides: money magnet bracelets, stone by stone; natural citrine versus heat-treated amethyst; green aventurine, natural versus dyed; tiger's eye and chatoyancy; Sphatik versus glass; real versus fake Navratna gemstones. Outside the mineral category: original versus fake rudraksha, original versus fake Karungali, original versus fake Tulsi mala and original versus fake Chandan. For how pyrite is used alongside yantras in Vastu practice, see Kuber Yantra versus Shree Yantra versus pyrite pyramid, and for wearing it, our pyrite bracelet guide and crystal bracelet guide.
Frequently Asked Questions
How can I tell if pyrite is real?
Two checks do most of the work. First, weight: pyrite has a specific gravity of about 5, roughly twice that of glass or quartz, so a genuine piece feels conspicuously heavy for its size. Second, streak: drag it across the unglazed back of a ceramic tile and it should leave a greenish-black to brownish-black line, not a gold one. Add a magnet check, which pyrite should fail to respond to, and a loupe inspection of the drill holes on a bracelet, and you have four independent readings in a few minutes.
What is fake pyrite usually made of?
Six things cover most of it. Goldstone, a man-made glass with copper flakes suspended in it, dominates in bracelets. Coated or electroplated beads over hematite, glass or ceramic are next. Magnetised ferrite composites sold as magnetic hematite are trivially easy to catch with a magnet. Chalcopyrite is a genuine mineral sold under the wrong name. Resin loaded with metallic pigment appears in cheap decor items. And for pyramids, spheres and plates, the most deceptive form is reconstituted pyrite — real pyrite chips or powder set in a resin binder and cast.
Does real pyrite stick to a magnet?
No. Pyrite is not attracted to an ordinary household magnet. If a bracelet or specimen jumps to a magnet, sticks to it or drags towards it, you are almost certainly holding a magnetised ferrite composite, often sold as magnetic hematite, or magnetite. Note the direction of the logic: magnetism is evidence against, not evidence for. A piece that ignores a magnet has passed only one filter, since goldstone, glass and resin are also non-magnetic.
Does the spark test prove pyrite is genuine?
Not usefully. It is true that pyrite struck hard against steel throws sparks, which is where the name comes from, but the test is impractical and unreliable for a buyer. It needs a hard strike that damages the specimen, it cannot be done on a polished bracelet or display piece, several other hard minerals including quartz and flint spark against steel too, and a failure to spark depends more on technique than on material. It is a demonstration, not an identification.
Is goldstone the same as pyrite?
No. Goldstone is a man-made glass with tiny copper crystals grown inside it, and it has no relationship to pyrite whatsoever. It is also widely mis-sold as sunstone, which is a third and different material. The easiest way to tell it apart is to hold a bead against a strong light: goldstone is transparent brown glass with discrete metallic flakes floating in it, so light passes through the matrix between the flecks. Pyrite is opaque metallic throughout, and about twice as heavy.
Why does my pyrite look dull or powdery now?
Pyrite is an iron sulfide and it oxidises in humid conditions, developing a duller browner film and sometimes a whitish or yellowish powder with a faint sulfurous smell. This is normal ageing rather than evidence of a fake, though rapid deterioration can indicate marcasite, a mineral with the same chemistry but a different crystal structure that is notoriously unstable. Keep pyrite dry, away from bathrooms and away from direct contact with damp cloth, and wipe it with a dry cloth rather than washing it.
Is a pyrite certificate worth anything?
Usually not much, and it is worth being honest about why. Pyrite is a common, inexpensive mineral, and nobody sends a modestly priced bracelet to a gemmological laboratory because the test would cost more than the object. Most pyrite certificates in the Indian market are seller-issued documents rather than third-party laboratory reports. Look for a named laboratory, a report number and a stated method; if those are absent, treat it as a marketing document and rely on the weight, streak and magnet checks instead.
Does Divine Hindu pyrite have government lab certification?
No. Divine Hindu holds government laboratory certification for Karungali ebony wood only, and we do not extend that claim to pyrite, crystals, gemstones or rudraksha. For pyrite the useful verification is physical rather than documentary, which is why this guide sets out the weight, streak, magnet and loupe checks in detail and encourages you to run them on anything we sell as readily as on anything else.
Why is some pyrite so cheap?
Because pyrite genuinely is cheap. It is one of the most abundant sulfide minerals on earth, so a low price is not by itself a warning sign the way it would be for ebony or a higher rudraksha. What matters instead is whether the price accounts for weight: pyrite is dense and therefore expensive to ship, so a large pyramid offered cheaply with free shipping is usually resin or a resin casting with chips in it. Ask for the weight in grams before you ask about the price.
How do I check a pyrite pyramid rather than a bracelet?
Weigh it and look at the base. A solid pyrite pyramid is startlingly heavy — difficult to hold comfortably in one hand at any real size — while a resin casting is not. Then examine the base or any cut edge that has not been polished: solid mineral shows continuous material with visible crystal boundaries and small cavities, whereas a reconstituted casting shows discrete chips or grains suspended in a binder of slightly different colour and texture. If the base has been covered with felt so it cannot be inspected, ask the seller why.
Visit us or order online
If you want a piece you can put through every check on this page, the Raw Pyrite Bracelet we stock is made from uncut natural pyrite of the kind traditionally kept and worn in Vastu practice, and the rough surface is precisely what lets you see granularity, pitting and bead-to-bead variation that a coated bead cannot show. Weigh it, streak an inconspicuous edge, pass a magnet over it — and hold us to exactly the standard this article sets for anyone else. To handle raw pyrite, pyramids and frames in person, visit Divine Hindu Store, Jayanagar 3rd Block East, Bengaluru 560011. Related reading: complete pyrite guide · where to keep a pyrite pyramid · pyrite frame placement · money magnet bracelet, real versus fake.
