GOLD & PLATINUM JEWELRY

Jewelry is made from alloys,mixtures of two or more metals. Gold is alloyed (combined) with silver,copper and zinc to make it harder,to change its color and to reduce its cost. Platinum alloys are usually made by combining platinum with ruthenium,iridium,palladium,cobalt or copper. Don't forget to find out the gold or platinum content of the metal when comparing fine jewelry prices. It's called fineness (the amount of gold or platinum in relation to 1000 parts). For example, an alloy containing 95% platinum has a fineness of 950,gold with fineness of 750 has 75% (750 parts) gold and 250 parts of other metals.