Design blocks

I am writing about diamonds in the left side column. Lets pretend that I run a business that sells diamonds. Underneath this bit of text I might put a button to go buy diamonds. i will offer you a diamond for three emeralds. Also equivalent to 13 loafs of bread. Hmmmmmm

I like rocks alot…is it obvious? some rocks are pure elements, but others are an amalgamation of many different compounds made in many different ways.