Education

Hue (7.04)

Hue (7.04)Hues are the colors that you see in a rainbow or a prism: red, orange, yellow, green, blue, violet, and (in diamond) every combination thereof. Unless you are dealing...

The Three Characteristics of Diamond’s Color (7...

The Three Characteristics of Diamond’s Color (7.03)Hue, tone and saturation are three qualities that must be understood to fully grasp the definition of color. The proper expression of these terms...

White Light (7.02)

White Light (7.02)As discussed earlier, white light is a precise balance of red, orange, yellow, green, blue and violet. We recognize this when we see a rainbow or light passing...

GIA/GTL Master Stone Requirements (7.12)

GIA/GTL Master Stone Requirements (7.12)GTL will not accept anything less than a .25 carat. A .33 carat would be better and a .40+ carat would be optimum. Even though a...

Choosing Master Stones (7.11)

Choosing Master Stones (7.11)We can select our own diamonds to send to GIA for a master stone report. It’s important to understand that specific requirements have to be met before GIA...

Master Stones (7.10)

Master Stones (7.10)GIA’s Gem Trade Laboratory (GTL), has collected sets of diamonds for the purpose of defining the color grading system. These sets are complete including the very highest grade...