Purchase a gold or diamond testing kit. Testing kits allow people to test their gold and diamond jewelry to ensure their authenticity. Most gold testing kits come with bottles containing testing solution, instructions and a touchstone. They can be purchased online from websites such as amazon.com or from some major jewelry stores. Modern diamond testers have an LED display for reading test results and a retractable tip for measuring accuracy. It's also important to have a scale available in which to weigh the jewelry.
Visit a website that displays the current value of gold and diamonds. Goldprice.org is a website that is updated daily and offers detailed and accurate information about the current value of gold. Diaments-infos.com is a website that will give you an estimate of what your diamonds are worth.
Obtain a professional appraisal. In some instances it may be more cost-effective and easier to obtain an appraisal rather than trying to figure out the worth of the jewelry yourself. Even if you believe that you have determined the correct value of your items, it does not hurt to obtain a second opinion.
Find a reputable gold or diamond buying companies. People have several options when it comes to selling their gold. There are mail-in jewelry buying companies that allow people to send their gold in and wait for a check to come in the mail. There are gold buying expos that occur in major hotels throughout the country. Gold-buying expos are events where there are several stands set up and people are looking to purchase gold. Then there is the traditional method of selling gold and diamond jewelry to a jewelry store. Jewelry stores are most likely the best option because you have the benefit of speaking with a person face-to-face and jewelry stores tend to offer a fair price for the jewelry that they purchase. Many jewelry stores will gladly purchase broken or damaged jewelry as long as it's authentic.