Sometimes the jewelry is also marked with its country of origin. These designations are designed to assure you that you are buying genuine gold jewelry of the karatage marked. The karatage and gram weight tell you how much gold is in a piece, but other crucial factors determining price are the piece's construction and design. A price based solely on gram weight does not reflect the work that has gone into the piece. It's important to remember that each piece of gold jewelry is unique and, if cared for properly, can last a lifetime.
White gold is an alloy of gold and some white metals such as nickel, silver and palladium.
White gold can be 18k, 14k, 9k or any karat. So the amount of gold is the same but the alloy is different. Clean your gold jewelry with a cleaning solution of sudsy lukewarm water, or bring it to your local jeweler and have it steam-cleaned. Dry and polish jewelry with a chamois or soft cloth after cleaning and rinsing. Keep gold jewelry free from dust, moisture, perspiration and makeup.