What is 22K gold?
22 karat gold contains 22 parts gold and 2 parts other metals (usually copper and silver), making it about 91.6% pure — which is why it is hallmarked 916. The small amount of alloy makes 22K noticeably harder and more durable than pure 24K gold, while retaining a rich gold colour. That balance of durability and gold content makes 22K the standard for traditional jewellery across much of Asia and the Middle East.
New Zealand jewellery follows the British-influenced convention of 9K and 18K pieces, so 22K/916 gold is mainly encountered in imported jewellery. Fineness stamps such as 375 and 750 are used rather than a compulsory national hallmark.