by PawnMaster | Nov 15, 2017 | Diamond Color, Diamond Quality, Diamonds, Gems, precious stones
The diamond color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value. GIA’s D-to-Z diamond color-grading system measures...
by PawnMaster | Oct 25, 2017 | Diamond Quality, Diamonds, Gems, Jewelry, precious stones
The term 4Cs we know today had its start in the early 1940s, as the brainchild of GIA founder Robert M. Shipley. A former retail jeweler, Shipley was fiercely committed to professionalizing the American jewelry industry. He established an institute (GIA) to provide...