Polyester: a versatile material able to imitate natural effects like mother of pearl, horn, turtle reducing costs of the original materials.
Hardened casein: a natural and precious material, by-product of milk. It offers innumerable possibilities of dyeing, shades, and manufacturings. Classic forms.
High fashion: precious materials like zama and mother of pearl, with rhinestones Swarovski and enamels to obtain a jewel effect.