Diamonds and Ancient Technology

I was just reading an article in this morning at USA Today about man-made diamonds which made me thing about the ancients and their technology. I keep wondering that the more we progress as a technological society, the closer we get to the level of the ancients of the last four great civiliations. We are supposed to be the fifth great civiliation. Maybe we are just discovering the knowledge and techniques that the great ancient civiliations (Lemuria or Mu, Osirians, Atlanteans, Rama etc...) already accomplished over 10000 years ago.

Edgar Cayce stated that the Atlanteans used crystals for power and other applications. The Lemurians or the Mu civilization is said to use crystals as storage of their knowledge. It seems that we are just beginning to acquire the knowledge to get the point where these ancients have already been.