The difference between 9ct and 18ct gold blog post | Brinkhaus Jewellers Perth

The Difference between 9ct and 18ct Gold

For nearly four decades, Brinkhaus Jewellers has been handcrafting exquisite gold and platinum jewellery from our Claremont studio. While we do offer a limited selection of carefully curated pieces from other esteemed brands, the vast majority of our collection is crafted in-house.

We work exclusively with 18ct yellow gold, 18ct white gold, 18ct rose gold, and platinum in our jewellery-making process. We are often asked why we do not use 9ct gold, and we would like to share our reasons with you in this blog post.

What is the difference between 9ct gold and 18ct gold?

The main difference between 9ct and 18ct gold is their purity. 18ct gold is 75% pure gold, while 9ct gold is only 37.5% pure, with only 9 parts of pure gold out of a possible 18.

Is 9ct gold or 18ct gold more resilient? 

When it comes to resilience, 18ct gold is the superior choice. It is more resistant to hard knocks and everyday wear and tear, making it ideal for heirloom pieces that will be passed down through generations.

Is 9ct gold or 18ct more resistant to tarnishing?

18ct gold is also more resistant to tarnishing than 9ct gold. Because of its higher gold content, it is less reactive to chemicals such as chlorine, hairspray, and perfume that can cause tarnishing. 9ct gold is more prone to tarnishing from exposure to these types of chemicals.

Is 18ct gold more expensive?

While 18ct gold is more expensive than 9ct gold, its superior quality and longevity make it a wise investment. 18ct yellow gold also has a deeper and richer gold colour than 9ct yellow gold.

At Brinkhaus Jewellers, we only work with 18ct yellow, white, and rose gold in order to ensure that our pieces last the test of time.

When you are considering purchasing a piece of jewellery, it is important to check what type of gold is being used. It may be more affordable but it can also impact the longevity and quality of the piece.

To find out more and to view our extensive range of handcrafted jewellery, visit us at 24 St Quentin Avenue, Claremont. 

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