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What is 375 Gold and Hallmark?

If you want to buy or sell gold, you have to ensure it’s a fair price. That is why the answer to the question “What is gold 375?” is so important because it tells us how much the gold product will be worth. The value of the gold products is affected by live gold prices, such as grade, purity and the product’s hallmarks.

To fully understand what 375 gold is, you must first understand what gold hallmarks are and why they’re significant. ‘375’ gold is only one of many distinct types of hallmarks in the UK. Here’s a closer look.

What is gold 375?

375 represents 375 parts out of 1000 that make up pure 24k gold. 375 has 37.50% pure alloy whilst the rest of the product will be made of usually copper or zinc. A gold product that is made from pure 37.50% has a hallmark symbol of 375 or also referred to as 9 carats.

What are hallmarks legally compulsory on precious metals?

To sell precious metal products (gold and silver) in the UK, it needs three hallmarks that the assay offices are legally obliged to put on the product.

What will you find in the 375 gold hallmark?


The sponsor’s mark is the person or company responsible for submitting the item to be tested and marked.

The purity mark is a mark of the precious metal content in parts per thousand. For example, 375 would indicate 37.50% purity, equivalent to 375/1000 make up pure 24k gold (37.50% purity) or 9 karats/ ct.

The Assay Office Mark indicates where the item was tested and marked; either London, Birmingham, Sheffield or Edinburgh. However, you must remember products not sold in the UK will not have these marks, as they would have hallmarks of the origin they are sold in. 

Gold Hallmark Standark Mark

Assay Office Hallmark - UK




What does 385 mean on jewellery?- Gold Hallmark 375

9 carat gold or 375 fineness is commonly used in jewellery since to its low cost and toughness. Although pure gold does not tarnish or corrode, other alloyed metals employed in 375 jewellery may do so, making 9ct is less durable when compared to 750 fineness (18 carat). 18 carat has a higher degree of pure gold, which is less likely to be brittle or tarnish and forgetting it has 75% of pure gold. 

Yellow gold is the most popular metal for 375 jewellery and is usually alloyed with copper to harden it. However, other metals such as silver, palladium or nickel may also be added depending on the product design and manufacturer’s preference.

White gold is an alloy of gold and silver, platinum or palladium; however, nickel and zinc are also found in white gold alloys, making them unsuitable for people with a nickel allergy.

White gold looks exactly like silver or platinum. 9ct White gold is a combination of gold and silver, platinum or palladium, but nickel and zinc may also be added. Platinum or palladium’s hardness makes white gold highly resilient and scratch-resistant. White gold jewellery is frequently rhodium plated to give it a bright shiny white look.

What is 375 gold worth

If you’re selling 9 karat gold products, the price of gold is determined by the weight, measured in troy ounces (31.103 grams). So, to determine how much gold might be worth, take into account the current market value for troy ounce gold and divide that number by 31.103 to get your investment’s equivalent ounce value.

For example; The current trading gold price per troy ounce would need to be taken to account. The current live spot price for fine gold is about £1350 per troy ounce (as of November 2021), so your commodity would be worth approximately £515.62 per troy ounce (assuming that the gold content is exactly 375 millesimal fineness or 37.50 per cent).

Are gold bullion products made from 375?

Gold is classed as an investment since it has an intrinsic value, which is why HM Revenue and Customs’ definition of precious metals or investment gold states that it must not be less than 900 thousandths or roughly 21 carats. As a result, bullion gold bars are made out of 24 carat gold, whereas gold coins can be made out of 22-carat gold such as gold sovs

Investment gold is made from standardised bars and coins, which must meet precise measurements to be accepted by the investors. The weight of gold in such is measured by the context of gold, which minuses any other metal it may contain.

For example, one ounce of gold coins less than 24 carat – such as the gold Krugerrand – has one ounce of actual gold, along with the other metals. As a result, and somewhat perplexingly, some gold investment coins will weigh more than their stated weight!

In comparison to investors, jewellery purchasers typically pay more attention to the product’s appearance than practical or value. However, 24-carat gold is too soft to wear and is not suitable for daily use.


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