Crafted from sterling silver, these art nouveau style drop earrings feature a black onyx gemstone adorned with sparkling marcasites. These earrings have a post and butterfly clip and are suitable for pierced ears only. Black Onyx Information: Number of Stones: 2 Stone Shape: Marquise Stone Size: 10mm x 4mm Carat Weight: 1.90ct Natural/Created: Natural Black Onyx Country of Origin: Brazil marcasite Information: Number of Stones: 36 Stone Shape: Round Stone Size: 2 x (1.30mm) | 4 x (1mm) | 30 x (0.90mm) Carat Weight: 0.31ct Natural/Created: Natural marcasite Country of Origin: Austria