White gold is an alloy composed of pure gold and durable metals such as zinc, nickel, and copper. The additional metals strengthen the gold – a very soft and malleable metal – and give it its white hue. The higher the karat number, the more gold is in the alloy.
18K gold is usually very good quality. It sits between 14K gold and 24K gold and consists of 75% gold and only 25% alloys, which gives it a high value while still being durable enough to wear every day.
Yes! With good care, your white gold ring will last a lifetime! And though it may require slightly more maintenance than rose or yellow gold, it remains a clean and classic choice that will last forever.
Your 18K white gold ring should not turn your finger green. Gold itself is generally considered hypoallergenic and non-reactive so the usual reaction that can turn gold-plated jewellery green is not present.