Where can I buy methylene iodide and other liquids for gem testing? No one seems to have them, and the places that do will not sell to a residential address. Also, when using clove oil, anise oil, or cinnamon oil, is it the oil used in baking, or essential oil?
This is a good site and will send to your home address. Antoinette Maitlins owns this company, she is a well known gemologist.
If you are going to pursue using the herbal oils, use the essential oils, purchase from a reputable vendor, and be sure you purchase food safe if possible, because they will be the purest. I guess, ideally, pharmaceutically pure is better, but I’m not sure if it’s available OTC.