Yes, you can use aluminum coil to make jewelry. Aluminum is lightweight, affordable, and easy to work with, making it a popular choice for crafting. It's also hypoallergenic, which is a plus for those with metal sensitivities. However, it's softer than metals like sterling silver or gold, so it may require more care to prevent denting or bending. Aluminum can be shaped, cut, and polished to create various jewelry designs, but it may not hold up as well over time or under heavy use compared to harder metals.