Gold Filled
Gold-filled Jewelry - Also called rolled-gold. These jewelry items are not actually filled with gold. They are made of a base metal (usually brass or copper) covered by sheets of gold in a mechanical bonding process. Effectively a thick coat of gold: the gold content is 5% or 1/20 of the total weight. Use gold-filled items for your top-of-the-line jewelry. Usually made with 14k gold, it is hard wearing. With reasonable care it will not peel or flake, and should last as long as solid 14k gold jewelry. It is safe for most people with sensitive skin.
Gold Plated
Gold-plated Jewelry - A base metal such as sterling silver is dipped into a bath of electroplating solution, with a lump of solid gold. When an electric current is applied, a thin layer of gold is deposited on the metal. Although the plate (and hence the color) on findings can wear off overtime, we use a thick plating to make sure it is more resistant for everyday wear.
Sterling Silver
Sterling Silver Jewelry - Sterling Silver is a mixture of pure silver and some other metal, usually copper. The resulting alloy gives the silver strength. The standard is at least 92.5% silver. Hence the .925 stamp you see on some sterling silver items.