875 purity is for 21-carat gold. 750 purity is for 18-carat gold. While many people opt for jewelry made from 22K gold, some choose 18-carat gold, which contains a mixture of other metals ...

Ostmann via Horejs, et al (2025) Antiquity The pendant is a rich green color, and appears to resemble classic jade. Chemical analysis ... part of a human burial — gold. A gold hair ring and ...