Gold Testing Stone, Professional Jewelry Gold Testing Gold Detecting Stone Jewelry Accessory for Gold Testing Examination Touch Stone Jewelry Tool

Specifications:Optional Type: Common, Superior (Small)Size: Superior (Small): Length: Approx. 6cm / 2.4in, Width: Approx. 3.4cm / 1.3inCommon: Length: Approx. 4.5cm / 1.8in, Width: Approx. 3.9cm / 1.5inPackage List:1 x Touchstone (Acids Testing Water Not Included)

• Accurate Gold Purity Testing – Specially designed acids test kit for verifying the gold content in jewelry, coines, bullion, antiques, and collectibles.
• Easy-to-Read Color Change – Acids changes color based on metal purity, providing quick and reliable results.
• Multi-Metal Application – Ideal for testing 10K, 14K, 18K, 22K–24K gold, as well as silver and other precious metals.
• Simple Testing Process – Apply a drop of acids on the touchstone; real gold remains on the stone, while fake metals dissolve or turn blue.
• Essential Tool for Jewelers & Collectors – Compact, portable, and easy to use at home, in workshops, or on-the-go appraisals.