As you select your medical ID from American Medical ID, one thing to consider is the material that your medical ID will be made from. Three common types of metal for medical IDs are available for purchase: stainless steel, sterling silver, and 14K gold. Here’s a quick rundown of the different types of metals to help you determine which is the perfect choice for you. Stainless Steel One of the most durable options, stainless steel is also the most affordable. …