How to Test Gold at Home: What Torch, Weight and Acid Tests Miss

A failed home test is a reason to doubt a piece. A passed home test clears nothing. Read the last column before you trust a result.

These checks do no damage. They can catch a careless fake, but they cannot prove the metal.

The outside can be real gold while the inside is not. That is why a test of the surface can pass. Reports describe these builds:

It can miss a fake, so a pass clears nothing. Sing Tao Headline reported on 22 March 2024 that a 45.11 g bracelet passed a torch test. The full case is in the Chow Tai Fook real-or-fake guide.

Daily Business News reported the same day that a testing-agency examiner said rhenium survives a shop torch. Guangming Online reported on 13 April 2026 that a 46 g chain passed a burn test at a buy-back shop. Liaoning police (CCTV News via Guangming Online, 23 October 2026) say chains with pure gold outer layers are hard to detect by burn tests. Do not use a flame or torch at home. It can burn you or start a fire, it can damage a piece you may need to return, and a pass proves nothing.

It cannot clear a well-made fake. Sing Tao, relaying CCTV on 22 March 2024, said simple weighing cannot tell such fakes apart. Daily Business News reported the same day that an examiner said rhenium defeats the specific-gravity method. The 45.11 g bracelet matched on weight.

Weighing still has one job: comparing the piece with the weight on a receipt. In its statement of 6 June 2025, Chow Tai Fook (CTF) gives its account of one dispute, and says it compared weight with its sale record. A different weight is a reason to ask. A matching weight proves little.

Magnet: none of the reports in this guide says a magnet caught a fake. The fakes they describe hide silver, tin, tungsten or rhenium under or inside real gold. So a piece that passes a magnet test is not cleared.

Acid: Liaoning police say chains with pure gold outer layers are hard to detect by ordinary acid tests (CCTV News via Guangming Online, 23 October 2026). Do not try acid at home.

Guangming Online reported a case in Suzhou on 13 April 2026. A 46 g chain read as 999 足金 on a spectrometer at a buy-back shop, then 70% at head office. An ordinary spectrometer missed tungsten and rhenium. 72 shops in places including Shanghai, Jiangsu, Zhejiang and Jiangxi were deceived.

Daily Business News (22 March 2024) quoted the director of a Ningbo testing center on a sample that was already cut open. It still read 999 足金 at several points on the center's instrument until it was filed down and tested again.

Liaoning police advise testing with a more accurate spectrometer, and buying gold only from regular stores and legal channels (CCTV News via Guangming Online, 23 October 2026). The Suzhou report advises shops not to rely on one test, and to use equipment that can analyze all elements. So one surface reading can be fooled, and these reports point to full-element analysis or cutting by a lab. They are press reports, not a technical standard. Do not accept one shop reading as proof.

NGTC, mainland China's national gem testing group, lists the services below. These are mainland standards, and they were read by title only. Ask the lab which method it will use, and whether it covers the inside of the piece.

China Consumer News reported on 6 February 2025 that gold-over-silver and thin foil items are hard to test without destroying them, and that for such items a test can cost more than the item. So, the report says, a seller's promise that you may retest the piece, with triple compensation if it is fake, means little to an ordinary buyer. Compare the likely cost with the value of the piece first.

Choose the lab yourself. The Ningbo director warned against test certificates supplied by dishonest sellers (Daily Business News, 22 March 2024). To check a paper you already have, see the Chow Tai Fook certificate check guide.

CTF has its own routes, and the real-or-fake guide and certificate check guide explain them. In mainland China, CTF's platform consumer rules (updated 15 October 2026) say gold weight disputes are settled by a report from a state-certified lab.

Do not cut, burn or alter the piece yourself. Keep the evidence first: the listing, the payment record, the papers and any test report. If the inside of the metal must be checked, leave that to a lab, and ask the seller or platform before any test that damages the piece. Use the seller's return rules, and the marketplace's protection if there is one.

The Suzhou report tells consumers to use regular shops, ask for a test certificate, keep records, and call the police at once if they find they were cheated. Liaoning police tell buyers to buy gold only from regular stores and legal channels.

The plain limit: no photo review can test metal, and that includes Vereev's. Vereev can review the marks, workmanship, packaging and papers of a branded piece as a second opinion, and it is independent of any brand.