The 925 stamp, magnet test, ice test, ring test, nitric acid drop, smell test, weight check, density check, and invoice red flags. From a Nagpur jeweller family that has been selling silver since 1989.
The most common buyer concern with silver jewellery in India is not price. It is purity. Silver looks similar to several cheaper metals. Silver plated brass, German silver (which contains zero silver), nickel silver, white metal, and stainless steel all share the same bright finish. They sell at fractions of the real silver price and many buyers only discover the difference months later when the plating wears off.
This guide covers nine tests you can apply yourself, in order from easiest to most accurate. The first three need only your eyes. The next three need basic household items. The last three require a jeweller. None of these tests in isolation is conclusive. Apply two or three together and you will confidently tell real 925 sterling silver from any common fake.
Every piece of authentic sterling silver carries a 925 stamp. The stamp is usually on a discreet but visible surface. On a chain or bracelet it sits on the clasp. On an earring it sits on the back of the post. On a bangle or kada it sits on the inside. On a ring it sits inside the band. On a pendant it sits on the bail or the back.
The stamp may read 925, S925, .925, Ster, Sterling, or Silver 925. All are accepted in India. A piece without any silver purity stamp is not necessarily fake, but it should be tested before you pay sterling silver prices for it. Older inherited silver from before the 1980s often has no stamp. Imported silver pieces from international suppliers typically carry the 925 stamp but no Indian certification mark, which is normal and expected.
The fastest, most accurate, and only fully non destructive way to verify silver purity is an XRF (X ray fluorescence) test. An XRF gun fires a low energy X ray at the piece and reads back the exact metal composition in 30 seconds. The result shows the silver percentage to two decimal places, and reveals any plating, alloy substitution, or base metal underneath.
BIS hallmarking is not mandatory for silver in India, and most genuine 925 silver, especially imported pieces, does not carry a BIS mark. That is normal. The reliable substitute for buyer confidence is the XRF reading. ZIA Silver Jewellery uses a calibrated XRF gun in store to verify purity on every batch we receive from our trusted international silver suppliers, and we offer the same XRF test free to walk in customers, including for pieces bought elsewhere. Bring any silver piece to either ZIA showroom and we will test it in 30 seconds, in front of you, with zero marks left behind.
Real 925 sterling silver has a soft warm white shine. It is not mirror bright like chrome and not yellow tinged like nickel silver. Place the piece next to a known sterling silver item under natural daylight. Differences in colour, especially a slight yellow or grey cast, are warning signs.
Examine the joins, clasps, and prongs under a loupe. Plated jewellery often shows a tiny dark line at edges where the plating is thinner. Real silver is the same colour all the way through. If you can see through the surface to a yellow or copper coloured base metal at any worn or scratched area, the piece is plated, not solid sterling.
Silver is not magnetic. Place a strong neodymium magnet (the small round kind you can buy for under Rs 100 at a stationery or hardware shop) against the piece. If the piece sticks to the magnet or visibly pulls toward it, the core is iron, steel, or nickel coated with a thin silver layer to look right.
The magnet test reliably catches the cheapest plated fakes. It does not catch silver plated brass or German silver because copper and zinc are also non magnetic. So a piece that fails the magnet test is definitely fake. A piece that passes the magnet test still needs further verification.
Silver has the highest thermal conductivity of any pure metal. It transfers heat faster than copper, gold, or aluminium. Place an ice cube on a flat silver surface (a coin, a wide bangle, a silver tray) and a second ice cube on a non silver metal of similar mass. The ice cube on real silver visibly melts faster within 30 to 60 seconds.
The ice test works best on flat pieces with mass. Thin chains and delicate earrings do not have enough thermal mass to read clearly. Make sure both ice cubes start at the same temperature and rest on flat surfaces at room temperature. This test is a quick and harmless way to confirm a silver coin or a heavy kada.
Sterling silver, when gently tapped against another metal, produces a clear high pitched ring that lingers for a second or two. Drop a silver coin onto a hard surface from a small height. The bell like ring you hear is characteristic. Plated brass and steel coins produce a dull thud or a short clack with no ring.
This test takes practice. The clearest demonstration is to compare a known sterling silver coin against a known steel or brass coin side by side. Once you have heard the difference, you will recognise it instantly. This is a useful test on silver coins and pendants but not on chains or earrings.
The nitric acid test is the most accurate at home test but it permanently marks the piece. Apply a tiny drop of dilute nitric acid (sold in jewellers supply stores as silver testing acid) on a hidden surface. A creamy white reaction confirms 925 sterling silver. A green or blue reaction means copper or nickel. A clear or no reaction means platinum or gold plated silver.
Silver has a density of 10.49 grams per cubic centimetre. That makes it noticeably heavier than most fakes. Brass is 8.4 to 8.7. Aluminium is 2.7. Nickel silver is 8.7 to 8.9. Steel is 7.9. Only gold (19.3) and platinum (21.4) are significantly heavier than silver, and both look obviously different.
If a chain or bangle feels suspiciously light for its size, the core is likely a cheaper alloy under a silver coating. Weigh the piece on a digital kitchen scale or a jewellers scale. Compare against a known sterling piece of similar size and design. A real 925 sterling silver chain of medium thickness in 18 cm length should weigh 8 to 14 grams. A real medium silver bangle in 22 mm diameter should weigh 15 to 30 grams. If the numbers are far below this, ask questions.
A printed itemised invoice is the simplest and most reliable single test. It shifts the burden of proof onto the seller and creates a paper trail you can use if the silver turns out to be lower purity later. Insist on every line below.
| Invoice line | What to look for |
|---|---|
| Item description | Style, design, and explicit 925 sterling silver or 92.5 percent purity |
| Net weight | Weight in grams to two decimal places, measured on a digital scale in front of you |
| Tag MRP per piece | The single fixed tag price marked on each piece, GST inclusive. ZIA Silver Jewellery sells on this model |
| Or per gram + making | Some sellers price per gram + making charges instead. Either model is legitimate as long as the bill is clean and printed |
| GST | GST shown on the bill. GST identification number printed |
| Purity mention | Explicit confirmation that the piece is 925 stamped sterling silver |
| Seller details | Shop name, full address, GST number, contact number |
| Return policy | Stated exchange or buy back policy on the back of the invoice or as a separate slip |
If the seller refuses to give a printed invoice, refuses to break out making charges and GST separately, or hides behind vague terms like Italian silver or German silver without a 925 stamp, walk away. A genuine ZIA Silver Jewellery invoice always shows every one of these lines.
Contains zero silver. It is an alloy of copper, nickel, and zinc. Tarnishes black quickly. Often sold in tourist markets as inexpensive silver style jewellery. Fails the colour test (slight yellow cast), the magnet test (if iron is added), and the smell test.
A brass core with a thin layer of real silver electroplated on top. Looks identical to sterling silver when new. Plating wears off in 6 to 18 months exposing yellow brass underneath at edges and high contact points like the inside of rings. Fails the weight test (too light) and shows brass colour at any worn area.
Same as German silver. Marketed under different names like white metal, alpaca silver, or nickel silver. Contains no silver and can cause skin allergies in some buyers because of the nickel.
An older alloy of 90 percent silver and 10 percent copper. Real silver but not 925 standard. Sometimes inherited pieces are coin silver rather than sterling. Stamped 900 or Coin or nothing. Holds value but should not be sold as sterling.
Every piece sold at ZIA Silver Jewellery is 925 sterling silver. We stamp 925 on every piece on a discreet surface. We provide a printed bill on every purchase showing the design description, weight in grams as proof of substance, the tag MRP per piece (GST inclusive), and an explicit 925 sterling silver line. We use a calibrated XRF gun in store to verify purity on every batch we receive from our trusted international silver suppliers, and we offer the same XRF test free to walk in customers who want to verify a piece they bought elsewhere.
We also offer a lifetime buy back guarantee on every piece. Bring back any ZIA Silver piece at any time and we will buy it back at a fair in-store valuation based on the original invoice weight and current condition. That guarantee only works because every piece really is 925, and we stand behind every one.
Bring any silver piece you want verified. We will XRF test it in 30 seconds, non destructively, free of cost. Two showrooms in Nagpur, open 11 AM to 9 PM, all 7 days.
Call Dharampeth 77589 50520 Call Pratap Nagar 77589 43238West High Court Road, Opposite Roop, beside Samsonite store, Dharampeth, Nagpur 440010
Open 11 AM to 9 PM, all 7 days
77589 50520
Near Durga Mata Mandir, below Kotak Bank, Pratap Nagar, Nagpur 440022
Open 11 AM to 9 PM, all 7 days
77589 43238
What does the 925 stamp on silver mean?
The 925 stamp means the metal is 92.5 percent pure silver alloyed with 7.5 percent copper. That alloy is called sterling silver. It is the international standard for jewellery grade silver. ZIA Silver Jewellery stamps 925 on every piece on a discreet but visible location like the back of an earring post, inside of a bangle, or clasp of a bracelet.
How can I verify 925 silver purity without a BIS hallmark?
BIS hallmarking is not mandatory for silver in India and most genuine 925 silver, including imported pieces, does not carry a BIS mark. Verify purity instead by checking the 925 stamp, asking for an itemised invoice with weight in grams, tag MRP per piece, GST inclusive, and requesting an in store XRF purity test. ZIA Silver in Nagpur offers free non destructive XRF testing in 30 seconds at both showrooms, Dharampeth and Pratap Nagar.
Can a magnet identify fake silver?
Yes for some fakes. Pure silver and 925 sterling silver are not magnetic. If a strong neodymium magnet sticks to your jewellery, the core is iron, steel, or nickel plated to look like silver. The magnet test rules out the cheapest fakes but does not catch silver plated brass or German silver. Pair the magnet test with the ice test and weight check for a fuller picture.
How does the ice test work on silver?
Silver has the highest thermal conductivity of any metal. Place an ice cube on a flat silver bracelet or coin and a second ice cube on a known fake. The ice on real silver melts visibly faster within 30 to 60 seconds. The test works best on flat pieces with mass like coins or kada. It is harder to read on thin chains or delicate earrings.
Is the nitric acid test safe to do at home?
The nitric acid test is the most accurate at home test but it permanently marks the jewellery and the acid is corrosive. A drop of nitric acid on real 925 silver turns creamy white. On copper or nickel it turns green or blue. On silver plated brass it turns green after the plating dissolves. Do not do this test on a piece you want to keep pristine. ZIA Silver offers free in store testing using a non destructive XRF gun instead.
Does real 925 silver tarnish?
Yes. The 7.5 percent copper alloy in sterling silver reacts with sulphur and humidity in the air and produces a thin black or yellow tarnish layer over weeks of wear. Tarnish is actually a sign of authentic silver. Pure 999 fine silver tarnishes more slowly but is too soft for jewellery. Plated jewellery flakes instead of tarnishing. ZIA Silver applies an anti tarnish coating that delays tarnish by 4 to 8 months of daily Nagpur wear.
What is the smell test for silver?
Real silver has no smell. Hold the piece close to your nose. If you smell a sharp metallic or coin like odour, it is likely plated brass or copper. The smell comes from the base metal reacting with the oils on your skin. Real 925 sterling silver is virtually odourless even after extended skin contact.
Where can I get my silver tested in Nagpur?
ZIA Silver Jewellery offers free purity testing at both Nagpur showrooms, Dharampeth and Pratap Nagar. We use a non destructive XRF gun that reads the silver percentage in 30 seconds without scratching or marking the jewellery. Walk in any day, 11 AM to 9 PM, with the piece you want tested. Dharampeth phone 77589 50520. Pratap Nagar phone 77589 43238.
What red flags on a silver invoice indicate a fake?
Refusing to give a printed invoice. No itemised weight in grams. No 925 stamp confirmation. No GST line. Vague terms like German silver, Italian silver, or pure silver without a 925 or 999 stamp. Note that silver pricing models differ legitimately, some sellers price per gram, ZIA Silver Jewellery prices per piece on tag MRP (GST inclusive). Either is fine. What matters is a clean printed bill with the design described, weight noted, GST shown, and a 925 stamp on the piece itself.