Testing Low Karat Golds! 8K Rose Gold Alloy using 14K Acid Solution. Demonstrating Solubility of 8K!

This video features a vintage estate find 8K Rose Gold engraved ID Bracelet set with round turquoise.
The video demonstrates how viewers can learn how to use the 14K Gold Acid Solution to separate Copper, brass, from gold alloys.

This demonstration shows the brass keys being scratched on the stone, and the 8K Rose Gold Alloy bracelet. The 14K Acid solution contains HNO3 Nitric Acid and copper and zinc are all soluble in the solution. The gold is insoluble and is left behind in the solution.

*The brass keys that was streaked across the stone instantly turns black and disappears immediately upon reaction with the acid solution.

*The 8K gold streak slowing fades to dark brown because the copper, zinc, and silver is dissolved leaving behind the gold that is unreactive to the acid solution.

*The touchstone method is still the fastest means of identifying gold alloys. XRF is quick but still is out of the price range for many Gold Buyers. This method is very inexpensive doesn't hurt the jewelry and can be tested within seconds.