Broken Cubic Zirconia or Diamond Pave Square Stud Earring

This item is a single, square-shaped stud earring featuring a pave-set cluster of small round stones, likely either small promotional grade diamonds or cubic zirconia. The earring face measures approximately 6mm to 8mm on each side. The setting is constructed from a silvery-toned metal, which could be sterling silver, white gold, or a silver-plated base metal. The stones are arranged in a multi-row grid pattern (approx. 5x5 or 6x6) held by small shared prongs. Notably, based on the user context provided, the earring is damaged and 'broken'; the post-back mechanism normally used to secure the piece through the ear appears to be snapped off or missing from the reverse side of the square head. The metal shows some light oxidation or tarnish, suggesting it may be silver-based. There are no visible maker's marks or hallmarks discernible in the current photograph. The style is contemporary and mass-produced, common in the late 20th to early 21st century. The quality appears to be consumer-grade rather than high-end fine jewelry, evidenced by the slightly irregular prong alignment and the density of the pave setting.