Art crayons are perfect for keeping your favorite color categories together! They are extremely versatile and work beautifully when used to tint gesso, whipped spackle, and other mediums. The Iridescents II set contains 12 eye-catching colors that are odorless and acid-free: Blue Topaz, Jade, Aquamarine, Rose Quartz, Canary Diamond, Citrine, Amber, Pink Sapphire, Coral, Amethyst, Blue Sapphire and Tanzanite along with 2 Blending Tools and 1 Paintbrush. They work beautifully for mixed media crafts. The clear storage case makes the set easy to transport and organize.