Gold purity is measured in karats (K). 24K is pure gold, while lower karats are alloyed with other metals for durability. Understanding karats helps you compare prices fairly.
- 24K — 99.9% pure gold
- 22K — 91.6% gold
- 21K — 87.5% gold
- 18K — 75% gold
Tip: use the Grams Gold Price API to fetch live per-karat gram prices in any currency.