What does 425 stamped on a necklace mean?

Answer 1

The numbers on rings are super tiny so what you are probably reading is either 42.5 or 92.5. If the ring is gold you are seeing 42.5 which means that the ring is 42.5% gold and the rest alloy. If the ring is silver you are reading 92.5 which means that the ring is 92.5% silver.

Answer 2

In the context of jewelry, the stamp "425" typically indicates that the piece is made of 42.5% pure gold, which is equivalent to 10 karats. This means that the necklace contains 10 parts gold out of 24 total parts, with the remaining parts being other metals or alloys. It is important to note that the purity of gold can vary depending on the country's regulations and standards, so it is always recommended to consult with a professional jeweler for an accurate assessment.