How to Test If Gold Is Pure
- 1). Wear the gold on your skin for several hours and see if any discoloration occurs on your skin or on the jewelry. Discoloration of either the skin or the jewelry indicates low purity; the gold is most likely mixed with other metals.
- 2). Look at the gold in natural light. Pure gold has a soft shine to it but is not highly shiny. It will appear to be a soft, golden yellow. A high gloss will indicate it is probably gold-plated and not pure.
- 3). Stick a pin or a needle into the gold. Pure gold is somewhat soft and malleable and can be penetrated by the needle. If the needle does not penetrate the gold, it is not pure.
- 4). Scrape a small amount of the gold on to a piece of glass. Add a drop of hydrochloric acid (HCL) or sulfuric acid (H2SO4) on the gold. Both chemicals are available at most hardware stores. If the gold dissolves, it is not pure. Whatever does not dissolve is pure gold.
- 5). Hold a magnet near the gold. If the magnet is attracted to the gold, other metals are present. Pure gold will not hold a magnetic charge.
- 6). Take the gold to an accredited jeweler who can perform an X-ray on the gold to determine purity.
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