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've guessed that a king and Cali king differ in size, you're absolutely correct! These two mattresses really differ in their dimensions. One is longer but narrower than the other. A regular king sized bed is 76 inches wide and 80 inches long, while the California king is 72 inches wide and 84 inches long.