What is the oldest evidence of diamonds?

Question

The earliest evidence of alluvial diamonds that I was able to find data on dated to about 800 bc. Is there any evidence of earlier diamonds?

Answer 1

Canadian diamonds are the oldest diamonds on earth
http://www.carnegieinstitution.org/old_diamonds/default.html
India contains one of the earliest references to diamonds and suggest that diamonds were known and ascribed value at some time before 400 bc
http://encarta.msn.com/text_761557986___9/Diamond.html

Answer 2

The name diamond derives from the ancient Greek adamas (αδάμας; “invincible”). They have been treasured as gemstones since their use as religious icons in ancient India and usage in engraving tools also dates to early human history.[3][4] Popularity of diamonds has risen since the 19th century because of increased supply, improved cutting and polishing techniques, growth in the world economy, and innovative and successful advertising campaigns. They are commonly judged by the “four Cs”: carat, clarity, color, and cut.

Answer 3

When did Solomon take kingship of Israel, it was said that he had gold and gems. Maybe your research is limited by your mind's perspective.......