Keychain Neodymium Magnet for Testing Brass, Gold, Silver, Coins, Ferrous Metals Keychain Neodymium Magnet for Testing Brass, Gold, Silver, Jewelry, Coins and Ferrous Metals This keychain magnet offers strong magnet power in a compact, portable design. It is ideal for jewelers, recyclers, coin dealers, or anyone needing to quickly assess jewelry, antiques, and industrial metals for iron, nickel, or cobalt content. Determine if jewelry is silver or gold plated by testing whether ferrous metals are used as the base metal (excluding certain nickel alloys). If a magnetic response occurs, the item is not fine silver or pure gold. The same applies to brass and bronze antiques, many of which feature plating over steel or iron. This magnet can also help distinguish polished aluminum from stainless steel in most cases and is useful for sorting industrial metals during recycling. Features a durable neodymium magnet encased in a metal shell with a pull force exceeding 1.5 pounds. Includes a stainless steel split ring. Useful for: - Identifying steel grades and metal alloys containing iron, nickel, or cobalt - Differentiating chrome-plated items from polished aluminum, silver, and non-magnetic stainless steel (chrome plating typically requires a magnetic nickel layer) - Distinguishing solid brass and bronze from steel-plated items (valuable in antique and hardware markets) - Detecting fake or plated jewelry, which often uses steel or nickel alloys as base materials (note: some alloys like nickel-silver and German silver are non-magnetic despite containing ferrous elements) - General organization tasks such as holding keys, notes, pictures, or blueprints - Educational use in science experiments involving ferromagnetism The magnet test is typically the first step before more advanced testing methods like density or acid tests. Product Specifications Type: Neodymium Magnet Keychain Material: N35 Neodymium Dimensions: 0.47 inches wide at widest point x 1.57 inches long (12 x 40 mm) Net Weight: 1.2 oz (34 g) Package Includes: 1 x Neodymium Magnet Keychain (accessories not included)