There is no traditional symbol, but the modern symbol for the 100th wedding anniversary is the 10 carat diamond. The diamond can be set in a ring, bracelet or necklace. Since people are living longer, the chance of couples reaching their 100th anniversary increases.
Each wedding anniversary has one or more symbols to represent the number of years in the marriage. For example, the first wedding anniversary is traditionally represented by paper, while the 20th wedding anniversary is represented by china. The traditional symbols ended with the 75th wedding anniversary, but as people are living longer, a list of modern symbols were added for years up to 100. For example, the modern symbol for an 80th anniversary is the diamond and pearl. For a 90th anniversary, it is the diamond and emerald.