Jewelers Gold Testing Supplies 22k 24k 1 Bottle Test Solution Plus Scratch Stone and Free 22k Mini Gold Bar Enables you to test jewelry, coins, scrap and more... on the go or at home Includes one bottle 22k test acid, one glass pro-stone, and a 5 gram gold plated test bar Each bottle contains 1/2 fluid ounce (0.5 fl oz) liquid; will last many uses Test stone effectively acquires sample and does NOT damage the gold you wish to test Very easy to use... ideal for professionals and hobbyists of all ages