We are often asked what is the difference between 9ct and 18ct gold, which is the best one to go for and how can you tell the difference?

Pure gold is very soft and therefore not suited to fine jewellery. To make it more durable other alloys are mixed with it.

9ct gold is 37.5% gold, the rest is usually made up of a mix of silver and copper, the amount of each will depend on wether the end result is yellow, rose or white gold.

18ct gold is 75% gold, it is also mixed with silver and copper but in lesser amounts.

A selection of yellow and white gold wedding rings

When deciding which is best for you, take into consideration cost, 9ct gold is approx half the price of 18ct, and durability.

If you want an heirloom piece of jewellery, to pass on to future generations, we would recommend 18ct. However if you are looking for a piece that can absorb everyday knock and scratches, 9ct is advised.

Detail of gold ring showing hallmark

If you want to check a piece of jewellery to see whether ith is 9ct or 18ct, take a look at the hallmark. 18ct gold will have a hallmark of 750 (this means 750 parts to 1000 or 75%), 9ct has a hallmark of 375 (350 parts to 100 or 37.5%).

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