Gold has been used to create jewellery for centuries and is valued for its beauty, strength and malleability. Gold will never tarnish, rust, or corrode. While naturally yellow, various alloys are commonly added to gold to create white gold and rose gold. Gold is commonly measured by karat for jewellery:
- 24 karat = 100% gold Too soft for jewellery
- 22 karat = 91.7% gold Very soft, rarely used for jewellery
- 18 karat = 75.0% gold Recommended for jewellery
- 14 karat = 58.3% gold Recommended for jewellery >
- 12 karat = 50.0% gold Not used in Blue Nile jewellery
- 9 karat = 37.5% gold The minimum standard in the UK
See also: Gold Education, Rose Gold, White Gold, Karat.