UD Stamp on 925 Silver Jewelry: Meaning, Significance, and Unique Designs

The “925” stamp shows that the jewelry is made of sterling silver, containing 92.5% pure silver. The “UD” stamp does not follow a standard meaning and varies by manufacturer. To know what “UD” means for your piece, ask the seller or consult a jewelry expert. Moreover, the UD stamp enhances the significance of 925 silver … Read more

Sterling Silver Symbols: What is the Symbol for Sterling Silver on Jewelry?

The symbol for sterling silver in jewelry is the lion passant. This mark has two variations: the lion passant guardant, which shows the lion facing the viewer, and the modern lion passant, which faces left. The modern lion passant was introduced in 1822 and reflects the rich history of silver marking. Another common marking is … Read more

Heat Treated Silver: What is the Stamp on Jewelry and Its Purity Hallmarks?

A stamp for heat-treated silver on jewelry is made from tool steel. These stamps produce clear and durable impressions. They often mark sterling silver (.925) and indicate karat value or logos. Their precision and strength ensure lasting results in various designs, making them essential for jewelers. Purity hallmarks indicate the amount of silver present in … Read more

Melting Temperature of Silver Jewelry Solder: Importance and Basics Explained

The melting temperature of silver solder ranges from 200 °C to over 360 °C. For hobby use, commonly found lead-free silver solders melt between 215 °C to 220 °C (419 °F to 428 °F). Understanding these temperature ranges is important for successful soldering in jewelry-making. Different types of silver solder exist, including hard, medium, and … Read more

Silver Hallmarks Explained: What is the Mark for Silver on Jewelry? Complete Guide

Sterling silver is marked with “925,” meaning it contains at least 92.5% silver mixed with copper for strength. Another mark, “950,” indicates higher silver content. These jewelry marks help you identify authentic silver pieces. Always check the mark to ensure you buy genuine silver jewelry. Other common hallmarks include the manufacturer’s mark, which identifies the … Read more