Onyx 9.5mm Square Cushion Buff Top Concave

This black onyx piece has a 9.5mm square cushion shape, with a polished buff top and a concave detail. The combination of rounded contours and a square outline gives the stone a distinctive decorative profile. It can be considered for ring or pendant designs that accommodate its shape.

Please note: Natural gemstones may vary slightly in colour, clarity and inclusions. Product images are representative, and individual stones may differ.