Crystal Sets is a product-type collection with recorded material labels including Agate, Golden Healer Quartz, Amethyst, and Black Tourmaline. Membership also carries form labels such as sets, carvings, hearts, and freeforms and product types including Crystal Set, Crystal Carving, and Home Decor, showing how the set category intersects with other catalogue classifications.
Start with the set-format entries, then compare their recorded materials—Agate, Golden Healer Quartz, Amethyst, and Black Tourmaline. Where additional form or product-type labels appear, keep them as separate catalogue facts rather than assuming every entry has an identical composition.