What is a good size for a tennis necklace?

What a good size is for a tennis necklace depends on your preferences. In terms of thickness, 3 millimeters is the average or medium size, but you can find thinner options for a subtler look and chunkier ones that make a more dramatic statement. Lengths vary as well, with 18 to 20 inches being among the most common dimensions. Shorter tennis chains may work better with some necklines, and those who want to layer their tennis necklaces may prefer longer pieces. On 1stDibs, find a diverse assortment of tennis necklaces.