18ct Gold Jewellery
18ct gold jewellery is made from an alloy that is 75 per cent pure gold, and you can see the difference. The higher gold content gives a deeper, warmer colour than lower carat alloys and a noticeably richer look against the skin. It also means more intrinsic worth, so 18ct holds its value well over the years. Being softer than 9ct, it suits pieces that are treasured rather than knocked about, and it takes and keeps a beautiful finish.
Every piece sold here carries a hallmark confirming the gold content, struck at the Assay Office as Irish law requires, so there is no guesswork. Written as 18k gold outside Ireland, it is widely used in fine jewellery. The extra purity makes it ideal for engagement rings, heirloom bracelets and statement earrings worn on special occasions, where the warmth of the metal complements gemstones beautifully.
If you prefer a harder-wearing option for everyday rings, our 9ct gold diamond rings offer excellent durability at a lower price point, while 18ct remains the choice for those who value depth of colour and long-term investment.
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18ct Gold Jewellery FAQs
Carat measures how much of an alloy is pure gold, out of 24 parts. 18ct is 18 parts gold to 6 parts other metals, which works out at 75 per cent pure. The remaining metals give the gold the strength to be worked and worn. The remaining metals add strength and durability as pure gold is softer and more susceptible to scratching and deformation.
9ct is 37.5 per cent pure gold, while 18ct is 75 per cent. The higher gold content gives 18ct a richer colour and more intrinsic worth, while 9ct is generally harder and more affordable. Neither is simply better: 18ct offers a higher gold content, while 9ct can offer greater durability at a lower price point. 18ct suits treasured pieces, 9ct suits jewellery that takes daily knocks.
Yes. Gold sold in Ireland must be assayed and hallmarked, and this has been the law here for centuries. The hallmark is struck at the Assay Office in Dublin Castle and confirms the gold content independently of the seller, which is worth knowing when you are comparing prices.
Pure gold does not tarnish, but 18ct gold contains other metals that may dull or discolour slightly over time depending on the alloy and exposure to chemicals, chlorine and cosmetics. Regular care can help keep it bright. Take pieces off before swimming or cleaning, wipe them after wearing, and have them professionally polished occasionally rather than scrubbing them at home.
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