If you’ve ever examined a ring, bracelet, or necklace closely, you may have noticed tiny stamped markings on the metal. These are known as hallmarks, and they play an important role in identifying a piece’s quality, origin, and, sometimes, even its designer. Whether you’re considering selling inherited jewelry or simply want to understand what you own, learning how to read these markings can offer valuable insight.
What Are Hallmarks?
Hallmarks are small stamps placed on fine jewelry to indicate important details about the piece. They are typically found on the inside of rings, the clasp of necklaces and bracelets, or the back of earrings. These markings are used to confirm the metal’s purity and, in some cases, identify the manufacturer or designer.
Hallmarks have been used for centuries to guarantee quality and authenticity. In many countries, hallmarking systems were established to protect buyers and ensure that precious metals met certain standards.
Metal Purity Marks
One of the most common types of hallmarks indicates the metal’s purity. These marks tell you how much pure gold, silver, or platinum is present in the piece.
Some common examples include:
- 10K, 14K, 18K, or 24K – These markings indicate the purity of gold. The higher the number, the greater the gold content.
- 750 – Another way to represent 18K gold, meaning the piece contains 75 percent pure gold.
- 585 – Equivalent to 14K gold, or 58.5 percent pure gold.
- 925 – Indicates sterling silver, which is 92.5 percent pure silver.
- PT or PLAT – Marks used to identify platinum jewelry.
These stamps are a key factor in determining a piece’s intrinsic value, especially when it comes time to sell.
Maker’s Marks and Designer Signatures
In addition to purity stamps, many fine jewelry pieces also carry maker’s marks. These stamps identify the manufacturer or designer and can significantly increase a piece’s value.
Well-known luxury brands such as Cartier, Tiffany & Co., and Van Cleef & Arpels often include their names or logos on their jewelry. Signed pieces from respected designers are highly sought after in the estate market and can command premium prices.
Why Hallmarks Matter When Selling Jewelry
Understanding hallmarks gives you a clearer picture of your jewelry’s value. A simple stamp can reveal the metal type, purity, and even the piece’s origin. However, hallmarks are only part of the story. Craftsmanship, condition, gemstone quality, and brand recognition also play major roles in determining value.
If you’re unsure what the markings on your jewelry mean, a professional evaluation can provide accurate answers. At Frank Pollak & Sons, we specialize in buying and selling fine, vintage, and estate jewelry, and we’ve been serving clients in New York City since 1905. Our experienced team can identify hallmarks, assess the true value of your pieces, and offer fair, competitive prices. Whether you’re looking to sell or simply want to learn more about your jewelry, we invite you to visit our Fifth Avenue showroom or contact us today for expert guidance.