23K

23k is a common shorthand that can denote the number 23,000 in contexts such as finance, demographics, and measurements. The 'k' stands for kilo, or thousand, derived from the metric prefix kilo-.

In the context of precious metals, 23K refers to 23 karat gold. The karat system measures fineness, with 24K being pure gold. 23K gold is about 95.8% gold and 4.2% other metals, such as copper or silver, depending on the alloy.

Because pure gold is very soft, 23K gold is often alloyed to improve durability for jewelry and coins. This slightly lowers the gold content relative to 24K but preserves a yellow hue. 23K is especially common in some Asian and Middle Eastern jewelry markets.

Note that karat (K) is different from carat (ct), the unit used for gemstones' weight. 23K refers to purity, not mass. When used in pricing or descriptions, context usually clarifies whether 23k means 23,000 or 23-karat gold.