This is the coolest video, I have found yet. I had blogged about synthetic lab grown gemstones before. I never knew how they did it though. Now you can know too. Synthetic gemstones are grown using actual low grade gemstones, and high quality crystal seeds which are then grown into say a Emerald, or Alexandrite. They are technically considered to be the same of the natural stone, but perfect without any flaws. Please do not confuse synthetic, with faux or simulated stones. Those are usually made of glass, or plastic, with no gemstone material at all. Watch this video, it is awesome.