So, Helen had heard that Western Australia is where the pink diamonds come from. She had an address so we went to check it out. It turns out that the address that she had was actually for the factory that processes the diamonds. They, ah, well, they wouldn't let us in. :D
They referred us to a jeweler called Linney's. We drove out to the shop and it was right down the street from the Witches Cauldron. We walked in the front door and this guy came up to greet us. We told him that we had been referred to speak to David Fardon and he said, "Yes, we've been expecting you. We just got a call from the factory." Woah! These guys are on the ball.
So the diamonds were pretty small, but the price tag wasn't. He said that over 95% of the worlds true pink diamonds come from Western Australia. He said that some diamonds are colored by impurities, but that these pink diamonds are formed through a natural shift in the formation of the diamonds structure. The pink color is actually a result of the way that the light is diffused.
In the shop they had this gigantic geode. It's about 4 feet long.