Gold Over Silver: What It Means, How to Identify It & Resale Value

Gold Over Silver: What It Means, How to Identify It & Resale Value

'Gold over silver' or 'GOS' is a marking you might find on imported jewellery - it simply means a silver base metal with a gold layer applied on top. It is essentially the same as gold vermeil in construction, though the term is more commonly used in American and European jewellery markets.

If you own a piece marked GOS and want to know its resale value, this guide explains what you are dealing with.

At a Glance

What Does GOS Mean on Jewellery?

GOS stands for 'Gold Over Silver'. It indicates that the piece is made of sterling silver (92.5% silver) as the base, with gold electroplated or bonded on the surface.

Common stamps include:
• GOS
• 925 GOS
• Gold Over Silver
• Sterling Silver with Gold

In practical terms, GOS is interchangeable with gold vermeil - both are silver pieces with a gold coating.

Resale Value of Gold Over Silver

At a gold buyer, GOS pieces are valued for their silver content - not the gold layer. The gold coating is too thin to have meaningful gold recovery value.

For a 10g GOS piece:
• Silver value (92.5% = 9.25g fine silver) at ~₹75/g = approximately ₹694
• Gold layer: negligible

Compare this to a 10g solid 22K piece which is worth ₹1,39,690 - more than 100x the value of the GOS piece.

How to Distinguish GOS from Solid Gold

• Stamp: GOS pieces are typically stamped 925 (sterling silver purity) alongside the GOS marking
• Weight: silver is denser than gold per apparent volume for large pieces - but this is hard to judge visually
• Magnet test: silver and gold are both non-magnetic, so this does not differentiate
• XRF testing: the definitive test - shows silver core and thin gold layer immediately
• Acid test: will show silver reaction at any exposed edge
• Hallmark: solid gold pieces will have 916, 750, or 585 BIS stamps - GOS will have 925

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Frequently Asked Questions

Is gold over silver real gold?

It has a real gold coating, but the core is sterling silver. It is not solid gold throughout - the gold layer is very thin.

What is GOS on jewellery?

GOS stands for Gold Over Silver - a sterling silver piece with a gold layer on the surface.

What is the resale value of gold over silver jewellery?

Essentially silver scrap value. The gold layer is too thin to recover economically at a standard gold buyer.

Is GOS the same as gold vermeil?

Yes - essentially. Both are sterling silver with a gold layer. GOS is the American term; vermeil is the French/European term.

Can I sell GOS at Attica Gold?

XRF testing will confirm it as silver with a gold coating. It would be valued as silver scrap, not gold.

How do I know if my piece is GOS or solid gold?

Look for the stamp: solid gold has 916, 750, or 585. GOS has 925 or GOS marking. XRF testing at the branch confirms definitively.

Does GOS jewellery tarnish?

The gold surface does not tarnish easily, but the silver base can tarnish at worn areas where the gold layer has thinned.