Although platinum has been mined throughout human history, it was not considered a precious metal until 1751. It then became "the metal of kings" and was used to fashion bowls, chalices, and crowns. The Queen Mother's Crown is the only British crown made of pure platinum and inspired the royal radiance of Pure Platinum Thinking Putty. Dazzling with gorgeous holographic glitter, it is a majestic way to enhance your brilliance. Each tin includes 1/10 lb of Pure Platinum Thinking Putty - a large handful for luxurious fun.