Peanut chain is a popular type of chain now. You might find this chain made entirely of peanut links, or using other chain links between the peanut links. Named for the shape's similarity to a peanut shell, the links can be rounded or flat, in a bowtie or peanut shape. You may also find this called crinkle chain. Sometimes crinkle chain has an extra dimple, so rather than a chain link that looks like 2 circles merged together, it may look like 3 circles pushed together!
In addition to all the varieties of chain in this series, there are flattened and textured versions of each. For example, a chain may be made with 2 round wires twisted together for a rope effect, then shaped into a cable or curb chain. Or, it might be made with a round wire, that is notched or textured for a different effect. You may find this chain labeled as textured, alma, or ribbed.
There are many other types of specialty chain out there, including chain that has crystals embedded in it, and chain with specialty charms such as leaves or hearts. Now you know the basics of the chain world and you'll be able to tell your customers about them, too!