Focus on the finishing details. High-quality replica jewellery should feature hand-set stones (prong or bezel settings) rather than glued-on stones, which tend to fall off. Check for smooth, mirror-polished surfaces without visible mold lines or pitting. For functional parts like lobster claws, box clasps, or earring backs, ensure they operate smoothly and have passed tension tests. Requesting a pre-production sample is the best way to verify that the weight and 'hand-feel' match the luxury aesthetic you require.