Tourmaline is a mineral that possesses pyroelectric properties, which means that it can attract small objects when heated. Also known as elaborates, dravite, tsilasite o uvita, among other names, can be found in its black variant west of the Iberian Peninsula, as well as in New York and Lastovietky (Czech Republic). You have all the information in: «List of the most precious rocks and minerals on the planet«.
You have all the information in: "List of the most precious rocks and minerals on the planet".