The gradation of color within the optical spectrum.
The attribute of colour whereby it is recognised as being predominately red, green, blue or yellow, etc.
Hue refers to the wavelength of the color and is completely separate from the intensity or saturation of the color. For example a red hue can look brown at a very low saturation level and pink at a very high saturation level. Back to top.
The specific color classification given to an object based on the seven colors found in the spectrum; red, orange yellow, green, blue, indigo, or violet. For example, garnets are found in a variety of shades of red from pink to plum, but all of these shades fall under the "hue" of "red". The more internally consistent a stone's hue is, the more valuable the stone is considered to be.