Trilobyte. Could you please tell us any evidence you have for a world-wide flood. I did a fair bit of work in geology in my younger days and have been following developments since. Nver heard of anything about any flood such as mentioned in the Bible.

The Bible is simply a collection of origin stories developed at the eastern end of the Mediterranean before writing was developed. Even the bits that survive from after that time are heavily slanted to support a particular perspective. they contain easily as much propaganda as any modern government press release.

As to the age of diamonds. It's my understanding they form when volcanic lava passes through carbon such as coal deposits. Diamonds are presumably forming as you read this.