18ct Gold
Solid 18ct gold is 75% pure gold, hallmarked 750, with the deepest, warmest colour of any gold we work with. It is our choice for the pieces you will never take off: lab grown diamond studs, diamond and emerald earrings, fine chains and engagement rings in 18ct yellow and white gold.
Every piece is UK hallmarked, gift-boxed with a certificate of authenticity, and ships free worldwide. Not sure whether to choose 9ct or 18ct? Our guide to UK gold hallmarks explains the difference.
Frequently asked questions
What is the difference between 9ct and 18ct gold?
18ct gold is 75% pure gold and is hallmarked 750. 9ct gold is 37.5% pure gold and is hallmarked 375. 18ct has a deeper colour, while 9ct is harder and more affordable. More in Is 9ct gold good?.
Is 18ct gold worth it?
18ct gold is a good choice for pieces you will wear for decades, such as engagement rings and diamond studs, because it has more pure gold and a richer colour. It is slightly softer than 9ct, so it is worth choosing well-made settings.
Does 18ct white gold need re-plating?
White gold is usually finished with rhodium for a bright white colour. Over the years the finish can soften and can be refreshed by a jeweller. It is a simple, inexpensive process.
Is 18ct gold hallmarked in the UK?
Yes. Every 18ct piece we sell carries a UK hallmark with the 750 fineness mark, applied after independent testing by an Assay Office.
