Acid and Gold: The Modern Alchemy of Artificial Gemstones

Everyone knows that humans can make artificial diamonds. But did you know that we can make sapphires, emeralds, and rubies as well? Did you know that this involves weird occult-like instruments, like little rooms lined in gold? Starting with crystal seeds and watering regularly with hydrochloric acid, we can grow a… »8/29/12 5:00pm8/29/12 5:00pm