Gemology - Stones

COLOR STONE QUALITY GRADUATION:

The description of color according to the Israeli company Gemewizard , leaders in gem color grading systems and whose system is already widely spread throughout the world, is based on three "color coordinates" : hue, tone and saturation , which allow a very exact description of the color of each gem, using its own code for each color. Under this system you can graduate Rubies, Emeralds, Sapphires and any variety of colored gemstones, and in turn know their price.