Diamond professionals use the grading system developed by GIA in the 1950s, which established the use of four important factors to describe and classify diamonds: Clarity, Color, Cut, and Carat Weight. These are known as the Four C s. When used together, they describe the quality of a finished diamond.
0. Most Americans adjust their clocks for Daylight Saving Time (DST) once in the spring and once in the fall -- but residents of two states, Hawaii and Arizona, have chosen not to observe it. This clocks stands in a city park in Glendale, Arizona. Wikimedia Commons. Arizona participated for one summer.
Daylight Saving Time & standard time: There is no Daylight Savings in Helsinki right now Daylight Saving Time ended: Sunday October 29, 2017 When the time was 04:00 clocks were turned 1 hour backward to 03:00 When do the clocks change to Daylight Savings 2018?