Gold Purity Marks The letter “k” refers to karats, where pure gold is composed of 24 karats (24k). A piece of jewelry with an etching that reads “18k” or “750” indicates that it is made up of 75 percent gold, while a “14k” or “585” mark indicates the metal is constructed with 58.5 percent gold.

How do I know what carat my gold earrings are?

Look for Karat Marks on the Earrings It is not uncommon to see numbers such as 583 or 750 stamped on gold jewelry. If your earrings have similar marks, then perhaps their purity is represented with parts-per-thousand numbers. To convert parts-per-thousand purity to gold karats, multiply the number by 0.024.

What do the numbers mean on gold earrings?

Gold purity marks are not always in the form of karat stamps, however. It is not uncommon to see numbers such as 583 or 750 stamped on gold jewelry. If your earrings have similar marks, then perhaps their purity is represented with parts-per-thousand numbers.

How can you tell the karat of gold earrings?

If you rub your earring on the testing stone provided with the kit, the gold will leave a visible mark. If you now drop some acid on it from one of the bottles and the mark changes its color, this means that the karat of the gold is lower than the number on the bottle’s label. If…

What do the numbers 750 and 585 mean on jewelry?

750 means 18-karat gold. 585 means 14-karat gold. 417 means 10-karat gold. But there’s more to know about gold markings on jewelry. These letters and numbers indicate an item’s purity. They stand for different varieties of gold, and some varieties are worth more than others.

What does ” AU 750 ” mean when stamped on jewelry?

Question: What does “au 750” mean when stamped on jewelry? Answer: Au is the symbol for gold on the periodic table, and 750 means the jewelry is 18 karat gold. So this stamp is just another way of indicating that the jewelry is 18K gold. Question: I have a Cartier love bracelet I got used.