Materials: Natural Stone/Precious Opal: 6mm Wire: 14kgf Earring Hooks: Stainless Steel Freshwater Pearl Round Rings: Brass Chain: Copper *Returns are not accepted. *Please refrain from purchasing if you are concerned about inclusions or chips unique to natural stones. *Please refrain from purchasing if you are looking for perfection, as these are handmade. *Please be careful if you have allergies. *Each item is carefully packaged and delivered to the customer. *We have used materials with as much play-of-color effect as possible. *Please note that the color and shape may differ slightly due to the camera. *Nickel-free materials are used as an allergy measure, but they do not prevent all allergies.