One of the ways a gemologist will identify a gem stone is by measuring the gem's ability to bend light. This measurement is called the refractive index, RI.

      Fashion legend ascribes the invention of the LBD ~ Little Black Dress~ to Coco Chanel in the 1920s. Ever since it has been the staple evening wear for women the world over. There are almost as many variations on the LBD as there are women donning them for holiday parties.