THOMAS SABO charm crafted in blackened 925 sterling silver, featuring onyx, synthetic corundum and glass-ceramic stone accents for refined contrast. Key attributes: Black | Silver | Red | Sapphire blue | Sterling silver | Lobster clasp | Charm Club compatible | Blackened finish | Onyx, synthetic corundum and glass-ceramic stone accents | Charm pendant design | Dimensions & fit: Approx. 29 mm height × 7 mm width | Composition & care: 925 sterling silver (blackened) | Onyx (a form of chalcedony) | Synthetic corundum (e.g., synthetic ruby) | Glass-ceramic stone