The category with the highest number of workers in 2011 comprised the 21.4 million office and administrative support occupations, which had average earnings of $2,843 per month, $34,120 per year or $16.40 per hour.n 2011, food preparation and serving related occupations were the lowest-earning category, earning an average monthly $1,785, which equaled $21,430 per year, or $10.30 per hour.
Another factor that affects a diamonds's apparent color is the color of the mounting itself. Yellow gold makes slight amounts of yellow in a diamond less obvious, while white metal mountings make the color in yellow diamonds more apparent.
Diamonds are found in all colors. A natural colored diamond is produced by the presence of other elements to the carbon structure (impurities) such as nitrogen, hydrogen and boron. Also, structural imperfections to the crystalline form such as graining can cause color (most notably pink).