21k gold is a type of gold that is found in some vintage jewelry items. It can be found in old bracelets, rings, and earrings. Below we'll provide more detail about this gold type and how much it can be worth.

What Is 21K Gold?

21k gold is real gold with a high purity. 21k refers to the gold's level of purity, and it means that your item is 21 karats out of a maximum of 24 karats. It's composed of 87.5% gold and 12.5% alloy. 21k gold is the same as 875 gold.

This type of gold was common in past eras. In modern times 21k gold is hardly ever made. Instead, 22k gold is the standard option for this level of purity.

21K Gold Bracelet
A 21k gold bracelet

How to Find Markings

Markings or hallmarks are easy to spot for any type of gold piece. You should clearly see 21k or the number 875 engraved on the piece. On jewelry the number may be small and concealed, but it should still be visible.

21K Gold Stamp

The Value of Your 21K Gold

In order to get the value of your 21k gold piece, you'll need to multiply the total ounces of gold by the spot price of gold. We make this easy for you with our gold calculator. All you need to do is load up the calculator, select 21k from the purity dropdown box, enter the weight of your item, and then click the 'calculate' button.

It's always good to know the value of your gold item. If you were ever going to sell your item then you have a base price.

Alternatives

Gold items come in several different types of purities. Below we will review three similar alternatives to 21k gold.

20K Gold

20k gold is another less-common gold type. It has 5% less gold content.

22K Gold

22k gold is a common option for modern jewelry. It has 10% more gold content.

23K Gold

23k gold can be found in some foreign jewelry items. It has 5% more gold content.