TTO 0503 Amethyst Glass Necklace A fabulous piece of 1950s glamour in this wonderful gold-tone necklace claw-set with twenty-five sumptuous amethyst glass stones. This looks a million dollars (which it would be if the metal were gold and the amethysts were real…) but ours is a modest £29. The necklace measures 16 inches long by 7/8ths deep.