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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.
Most sterling silver carries a 925 stamp, though a stamp is not guaranteed on every genuine piece. 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 most reliable everyday safeguard is not a gadget, it is documentation. A shop that will put the metal in writing on an itemised invoice is telling you what it actually believes it sold you, and that record is what you fall back on later. For an exact assayed figure you need an independent assay lab, and reveals any plating, alloy substitution, or base metal underneath.
Every ZIA piece is genuine 925 sterling silver, backed by an itemised invoice. That is normal. The reliable substitute for buyer confidence is the paperwork.We source from trusted international silver suppliers and put the metal in writing on your invoice. Bring any silver piece to either ZIA showroom and the team will talk you through it honestly.
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, printed on the invoice as proof of substance |
| Tag MRP per piece | The single fixed tag price marked on each piece, GST inclusive. ZIA 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 sterling silver |
| Seller details | Shop name, full address, GST number, contact number |
| Return policy | Stated exchange policy on the back of the invoice or as a separate slip |
If the seller refuses to give a printed invoice, refuses to show the price and GST clearly, or hides behind vague terms like Italian silver or German silver, walk away. A genuine ZIA invoice always shows the piece, its 925 sterling silver grade, the weight, the fixed tag MRP with GST, and the seller and return details.
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 is 925 sterling silver. 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 source from trusted international silver suppliers and put the metal in writing on your invoice.
ZIA does not buy back silver. If a piece bought from us is not right, bring it back to either showroom within 7 days of purchase with the itemised invoice and we will exchange it. After 7 days we cannot exchange it.
Come and see the collection in person. Two showrooms in Nagpur, open 11 AM to 8:30 PM, all 7 days.
Call Dharampeth 93220 16367 Call Pratap Nagar 99754 75812West High Court Road, Opposite Roop, beside Samsonite store, Dharampeth, Nagpur 440010
Open 11 AM to 8:30 PM, all 7 days
93220 16367
Near Durga Mata Mandir, below Kotak Bank, Pratap Nagar, Nagpur 440022
Open 11 AM to 8:30 PM, all 7 days
99754 75812
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. Where a piece carries a fineness mark it usually sits somewhere discreet but visible, like the back of an earring post, the inside of a bangle, or the clasp of a bracelet.
How can I verify 925 silver purity at ZIA?
Every ZIA piece is genuine 925 sterling silver. ZIA does not run purity testing in store. What you get on every purchase is an itemised invoice that states the metal, with the tag MRP per piece, GST inclusive, 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. For an exact assayed figure, an independent assay lab is the place to go.
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 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 does not run purity testing in store. What you get at both Nagpur showrooms, Dharampeth and Pratap Nagar, is an itemised invoice that states the metal on every purchase, and staff who will explain the piece honestly. Walk in any day, 11 AM to 8:30 PM. Dharampeth phone 93220 16367. Pratap Nagar phone 99754 75812.
What red flags on a silver invoice indicate a fake?
Refusing to give a printed invoice. No itemised weight in grams. No itemised description of the piece. 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 prices per piece on tag MRP (GST inclusive). Either is fine. What matters is a clean printed bill with the design described, weight noted and GST shown.