The Half-Byzantine weave is one of my personal favorites. It's a visually complex and interesting way to make a chain. The only drawback is that it tends to want to twist slightly, but in this case I've solved that problem by using slightly heavier copper links as a 'pendant'. This heavier section both holds the necklace flat against the neck, and keeps the clasp in back.
This necklace is 16 inches long, and is made of aluminum and aged copper.