Originally Posted by cmac2012

Now that sounds more definitive. I've never heard it put in those terms, I'm guessing most people who repeated any version of the stat. only barely knew what they were talking about. Even so, 3+ Olympic pools is not a huge volume compared to the size of the earth.

The thing that sobers the hell out of me is the knowledge that there are large amounts of diamonds and rubies buried too far underground to be seen by humans in our lifetimes, maybe never. I saw a public TV bit on the big diamond mine discovered somewhere up yonder in Canada. A recent geology grad, a semi hot looking lady in fact, had a hunch that a lake was a former volcano and that diamonds may have been vomited up from the depths by it.