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Yellow Gold Knot Cufflinks
Hand crafted 18 karat yellow gold knot cufflinks.
Metal: 18k yellow gold
Height: 0.52 in. (13.21 mm)
Width: 0.65 in. (16.51 mm)
Depth: 0.38 in. (9.66 mm)
18 Karat Yellow Gold
18k (75%) gold is the purest form of gold used for jewelry (pure 100% gold is 24 karats by definition). 18k means that 18 out of the 24 parts that make up the gold are pure gold. The most common hallmark stamps for 18 karat gold are 18K or 750 that indicate 75% gold purity. 18k yellow gold is an alloy made up of 75% pure gold and 25% alloy (12.5% copper, 12.5% silver).