This happens during the production process. The main reason is that the module is too small for stamping 925 or 990. What is Sterling Silver .
10pcs of 925 Sterling Silver Tiny Cord End Caps w/ Hole 2mm for Bracelet
10pcs of 925 Sterling Silver Floral Leaf Daisy Bead Caps for Bracelet Necklace
10pcs of 925 Sterling Silver Pumpkin Flower Bead Caps for Jewelry Findings 9.5mm
10pcs of 925 Sterling Silver Lotus Flower Bead Caps Spacer for Bracelet Necklace
Bulk 925 Sterling Silver Tiny Crimp Tube Beads Spacers 1.2mm 1.5mm 2mm 3mm
10pcs of 925 Sterling Silver Closed Drop Jump Rings 925 Silver for Bracelet
