Vintage 10K gold necklace, 40cm. I've been looking for this length, but I mostly find 45cm ones, so I was thrilled to finally find this one. It's the perfect length and looks great! The chain has a curly design. This chain is called a Singapore chain. I sometimes get asked about the gram weight of 10K gold products, but this is unknown. Since it's 10K gold, I hope you enjoy it as a fashion item rather than an investment. I researched the gold markets in Korea and the US, and found that 14K and 10K, and white gold for white-toned jewelry, are the mainstream, with many places not carrying 18K or platinum. 10K hallmark present. It's in good condition and can still be worn for a long time. Please refrain from purchasing if you are sensitive to used items. I will disinfect and clean it before shipping, so please rest assured.