AIGS master colour chart
AIGS Type: Type classifications was created to facilitate the communication of the appearance of rubies and sapphires. The type separation is not an indication of quality or origin. It is merely to denote a color appearance with a characteristic hue and tonal range. Understanding different types of eliminates the need for lengthy description of color as well as the argument of the origins of the stones. Type A is not necessarily better than Type B, C , K etc. or vice-versa as the sequence of the type has no significance. The terminology Sri Lanka-type, Australia-type, x-type sapphires; or Thai-type, Burma-type rubies may be used interchangeably of the A, B, C categories when describing stones.
TAG AIGS master color chart, sapphire color, ruby color, AIGS color chart, color master for stone, stone color set, gemstone color
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