The gold content also known as fineness is a measure of a precious metal’s purity, and it’s based on parts per thousand (ppt).
Yellow gold is naturally yellow in colour. However, as pure gold is very soft it is usually mixed with alloy metals such as copper and zinc.
Rose gold is made by alloying pure gold with copper and silver.
White gold is made by alloying pure gold with white metals such as nickel, silver and palladium. Usually with a rhodium coating.
Platinum is usually mixed with other similar metals such a palladium group metals (palladium, iridium, ruthenium, rhodium and osmium).
Silver is made by alloying pure silver with copper to make it stronger usually known as sterling silver.
9ct gold is 37.5% pure gold with 62.5% alloying metals. When stamped or hallmarked you will see 9KT or 375.
Rhodium is a precious metal that is in the family of platinum.
Enamel in jewellery and decorative work goes by a few names—vitreous enamel, porcelain enamel, and painted glass.
