Onyx For Watch Dial 黑玛瑙表盘 Item Name: Onyx Dial Plate; Material: Onyx Gemstone; Usage: For Watch Dial/ Cadran/ Watch Repair; Color: Natural Black; Diameter: 5mm-32mm; Tolerance: +0.03mm/-0.03mm; Thickness: 0.60mm-6.00mm; Tolerance: +0.03mm/-0.03mm; MOQ: 10 Pieces (EXW);