No sign-up
Free tools
Small, single-purpose tools that run in your browser. No account, nothing to install.
Engagement Ring Designer Design a ring in 3D — stone, carat, metal, setting, accents — with an indicative price that moves with every choice. Open → Ring Stamp Decoder Type what’s stamped inside the band — 585, 14K, 925, PT950, HGE — and see the metal, the purity and whether it’s solid or only plated. Open → UK Hallmark Decoder Type the number in a British hallmark — 375, 750, 925, 950 — for the metal and carat, then match the assay office mark, the symbol and the date letter. Open → Gold Ring Value Calculator Weight, karat and today’s metal price in; pure gold content, melt value and a realistic cash offer out. Open → Diamond Size Chart Carat weight to millimetres for ten diamond shapes, with a true-to-scale preview and a full printable table. Open → Louis Vuitton Date Code Decoder Turn an LV date code into a factory country and production period — and check whether the format fits the bag. Open → Rolex Serial Number Lookup Enter the serial from between the lugs or the inner bezel and see roughly when the case was made — with both readings where a 1950s serial fits two periods. Open → Collector’s Glossary Plain-English definitions of the terms used for diamonds, rings, art, watches, designer bags and coins. Open →
Looking for explanations rather than tools? Start with the guides.