5-Prong Gold Testing Needles Kit for Prospecting - Test 8K, 10K, 12K, 14K, 18K Gold Purity - Essential Tool for Jewelers, Pawn Shops & Gold Buyers - Perfect for Field Testing & Authenticating Gold Jewelry

Looking for high-quality test needles with various gold karat representations? Look no further! Our exclusive set of test needles boasts a diverse selection of gold karats, including 8K, 10K, 12K, 14K, 18K.  These needles are crafted with precision to ensure accurate and reliable testing results for your gold jewelry and precious metal assessments. Whether you're a jewelry professional, a gold enthusiast, or conducting scientific experiments, our test needle set is the perfect companion. Discover the finest gold karat testing experience with our top-notch needles, designed to meet your specific needs. 

How to Use:

• Use these test needles to compare acid reactions with gold items to be tested.
• Choose a karat needle, rub or scratch the needle against a test stone, and make a rubbing or scratch with the item to be tested next to it.
• Place a drop of testing acid across both marks, and carefully observe the reaction to the acid.
• If the scratch or rubbing made by the item being tested reacts the same as the test needle scratch or rubbing, you could infer that the karat of the item being tested is the same as the test needle.
• If the item being tested dissolves quicker than the comparison test needle mark, the gold content of the item being tested may be a lower karat than the test needle used.
• If the item being tested dissolves slower than the comparison test needle mark, the item being tested may have a higher karat than the test needle used.

*Please note-this kind of gold testing is subjective, and requires careful observation and practice to master.