This large gold testing stone STN719 is ideal for use with test acids and testing solutions to determine karat of gold. It’s made of natural stone ...
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Description Platinum testing acid in liquid form. These acids give accurate results when checking the purity of platinum. They come in easy-to-use ...
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The 1” x ½” rare earth magnet for instant precious metal detection is great for the initial testing of scrap metal and jewelry (gold and sterling a...
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Description 22 Karat gold testing acid in liquid form. JSP brand. These acids give accurate results when checking the Karat value of gold. They com...
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