18k solid yellow g/f gold curb cuban link chain necklace hip-hop italian stamp au750 men's women 7mm 750 mm 75 cm long 29 inch, Silver

some gold-filled pieces have the same appearance as 18 karat (75%) gold. gold-filled items, even with daily wear, can last 10 to 30 years but will eventually wear through. gold-filled items are 5 to 10 times thicker than regular gold plating, and 15 to 25 times thicker than gold electroplate