MASTER SET:
A master set of grading diamonds used for comparison when color grading diamonds. There are also color master sets for accurately describing the various hues and saturation of colored diamonds and gemstones.
Master set
Set of diamonds (usually ones certified by GIA) used as a standard to grade color in other diamonds.
Melee ...
Master Stones / Master Set
A set of color comparison diamonds that defines diamond color grades in the normal (D-to-Z) range.
Near Colorless ...
You must never accept an appraisal that is done using anything other than a certified diamond master set containing at least five diamonds.
A stone can be compared and its color determined by using reference set or master set of stones. The best way to use this set is under natural light. The master set has stones graded according to the colors they exhibit.
The photo below shows a master set used by gemologists to grade color in diamonds. Each diamond to be graded is compared to the master set to determine where it should fall on the diamond color scale.
A light Source with a color temperature of 5,000 to 5,500 degrees Kelvin is used as a basis for color graduation, as well as a master set of brilliants the Position of which within the color grade has been established.
Grade - The systems for valuing diamonds as compared to a master set of stones.
H
Half pearls - Unusually small pearls that have been cut in half to use for border decoration on jewelry pieces.
diamonds of known body colour to which other diamonds are compared to judge their colour grade. Master diamonds typically range from colourless through gradually deepening tints of yellow. Also called colour sample or master colour set, master set or ...
 See also: Diamond, Stone, Master, Color, Shape
  
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