- Crystal wholesale suppliers are companies that specialize in providing large quantities of crystals, gemstones, and other minerals to retailers, metaphysical practitioners, and other businesses. These suppliers often offer a wide variety of products at competitive prices, making it easy for their clients to source the materials they need for their businesses. If you're looking to purchase crystals in bulk, working with a wholesale supplier can be a great way to save money and ensure that you have access to a wide range of products.