Graphite has the same chemical composition as Diamond, which is also pure carbon, but the molecular structure of Graphite and Diamond is entirely different.
The California king size is a mattress measuring 72 inches wide by 84 inches long. In terms of length it is four inches longer than the standard king and queen size mattresses. The mattress was made by David Bergeson of California sometime in 1982.
If you are ordering a Cal King order a size 80 because the bed will not fit into the frame. It's supposed o be 77 ...forget it and order 80. Otherwise the color and quality is gorgeous.