A simple video showing two methods for testing turquoise at home. Both methods are non-destructive to natural turquoise. However, both methods will leave marks to fake turquoise. New video here shows the hot needed on a fake piece: https://youtu.be/VJf6ibYIiTg New Video Here shows some new lab created turquoise and also shows which liquids can be substituted for acetone: https://youtu.be/ye60wHUAayY Supplies List: Q Tips are great for applying the acetone to the stones: https://amzn.to/3kLMT5B Acetone: Note that this IS different than fingernail polish, so using actual acetone will make a difference in the results. You can pick this up at most hardware stores, or online here: https://amzn.to/3DLdLul Nitrile Gloves Important: Nitrile WILL degrade with acetone, so while they offer protection for a few short tests, if you are going to be working with acetone for a prolonged period, then Butyl Rubber Gloves will be a much better choice. Please note that "black nitrile" is not Butyl. The Nitrile gloves I use in my shop can be found here: https://amzn.to/3cp1SOj Butyl Rubber gloves are more expensive, but are reusable and offer a better skin protection against harsher chemicals. They can be found here: https://amzn.to/3DCX6ck Kitchen Lighter: These are handy for lighting candles, or directly heating the needle to test the turquoise. Plus, I use them all the time in my shop for various purposes such as melting ends of paracord, etc... https://amzn.to/3DrJmRo Cheers, Austin Disclosure: I am a member of the Amazon Affiliates program and Earn a commission on any sales made through the links to the products I endorse. I make a great effort to only endorse products which I myself use and enjoy.