Jewelers rely on Gold Test Needles for accurate gold purity verification. This Set of 5 Gold Test Needles (8K, 10K, 12K, 14K, 18K) is an essential tool for testing the karat of gold jewelry, coins, and scrap metal. The needles are crafted from high-quality steel and individually calibrated for reliable testing.

Designed for ease of use, simply scratch the jewelry with the corresponding test needle on a test stone and apply the appropriate testing solution. By comparing the reaction, users can determine the exact gold content of their items. Each needle in this set is precision-engineered to deliver consistent and accurate results, making it a must-have for jewelers, appraisers, and metal refiners.

This 5-piece Gold Test Needle Set includes three different gold karats and one silver fineness representation, allowing for comprehensive gold testing. Whether you’re testing jewelry, bullion, or scrap, these test needles ensure precise karat verification.

How to Use:

1. Select a karat test needle (8K, 10K, 12K, 14K, or 18K).
2. Rub or scratch the needle against a test stone alongside the item being tested.
3. Apply a drop of testing acid across both marks.
4. Observe the reaction:
   • If the scratch from the jewelry matches the test needle, it likely has the same karat.
   • If the jewelry dissolves faster than the needle’s scratch, it is a lower karat.
   • If it dissolves slower, it may be a higher karat.

Note: Gold testing requires practice and careful observation for accurate results.