1 Ounce of French Jet Black Mourning Beads. Genuine Vintage Vauxhall Black Glass Beads. Photo illustrates shape and style, Shark's tooth Shape. Please see my other listings for other styles of Jet Black Mourning Beads. These are authentic vintage French jet black glass mourning beads. Rare and Sought After, Hard to Find! You are buying these beads by the ounce so the number of beads varies according to their size. Bohemia.