Is it Jet, Onyx, Obsidian, French Jet or Plastic? Tell the Difference - Black Stones in Jewelry

Let's explore black stones in jewelry so we can tell if we have Whitby Jet, French Jet, Onyx, Obsidian, or Plastic! Jewelry Lovers and Sellers-  ...  40 FREE Etsy Listings Promo -  ...  Merch By Ama