JEWELRY HALLMARKS
Every stamp, symbol, and engraving on your jewelry tells a story — the metal's purity, where it was assayed, when it was made, and who crafted it. Browse our library of hallmarks or use our AI tool to identify marks from a photo.
FEATURED HALLMARKS
925 Sterling Silver
The 925 stamp indicates sterling silver, meaning the piece is composed of 92.5% pure silver and 7.5% other metals, typically copper. This is the international standard for sterling silver jewelry.
999 Fine Silver
The 999 stamp indicates fine silver, meaning the piece contains 99.9% pure silver. This is the highest standard of silver purity used in jewelry and bullion.
750 / 18K Gold
The 750 stamp indicates 18-karat gold, meaning the piece contains 75% pure gold. This is one of the most popular and highly regarded gold purities for fine jewelry worldwide.
585 / 14K Gold
The 585 stamp indicates 14-karat gold, meaning the piece contains 58.5% pure gold. This is the most popular gold purity for jewelry in the United States due to its excellent balance of beauty and durability.
375 / 9K Gold
The 375 stamp indicates 9-karat gold, meaning the piece contains 37.5% pure gold. This is the minimum gold purity legally recognized as gold in the UK, Ireland, and several other countries.
916 / 22K Gold
The 916 stamp indicates 22-karat gold, meaning the piece contains 91.6% pure gold. This high-purity gold is especially popular in South Asian, Middle Eastern, and Southeast Asian jewelry traditions.
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Understanding Gold Karat Marks: What 10K, 14K, 18K, and 24K Mean
Gold karat marks are the most common stamps you will find on gold jewelry, yet many people misunderstand what they actually indicate. These small numbers stamped inside rings, on clasps, and near closures tell you exactly how much pure gold is in the alloy. Understanding karat marks is the first step to evaluating any piece of gold jewelry.
Silver Purity Stamps Explained: 925, 950, 999, and Coin Silver
Silver jewelry and silverware carry numeric purity stamps that indicate exactly how pure the silver content is. From the ubiquitous 925 to the rarer 999 and historical coin silver marks, these stamps are your key to understanding what you have in hand. Knowing how to read them helps you assess value, check authenticity indicators, and care for your pieces properly.
How to Read British Hallmarks: A Complete Guide to the UK Assay System
The British hallmarking system is the oldest consumer protection legislation still in active use, dating back to 1300. Every piece of precious metal sold in the United Kingdom must carry legally mandated hallmarks that identify its purity, origin, and the assay office that tested it. Learning to read these marks reveals the purity, origin, maker, and age of any piece of British jewelry or silverware.
JEWELRY MAKERS
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