* MATERIALS:  14KG FILLED, 14K Gold FILLED, or Sterling Silver * BALL BEAD SIZE:  4mm/2.5 mm * LENGTH: 6"    NICOLE is a chic quintessential piece that will elevate any look!        What is "Gold Filled" material?   It's the most durable metal next to the pure gold. It is a fusion of Gold and Brass usually. The color doesn't rub off, because it's FUSED not PLATED.