Sapphire Ring Co have incorporated the official GIA Sapphire and Ruby color map below. The charts explain the color grading system used by all GIA G.G. gemologists in their color grading of Sapphires & Rubies. The charts illustrate the wide variations in color gradings for Sapphire and Rubies as well as the three main factors which make up a Sapphire's color: Hue, Tone & Saturation.
Please feel free to contact us at any time with any questions you may have on Sapphire color grading and how this is used today to give each Sapphire it's final color grade. Understanding these distinctions is important in properly choosing your perfect color in a natural Sapphire or Ruby.
GIA Color Grading Scale
The GIA Colored Stone Grading System includes a description system that uses 31 hue names to describe colored gemstones.
|very slightly greenish blue||vslgB|
|red-purple or purple-red||RP/PR|
|strongly purplish red||stpR|
|slightly purplish red||slpR|
|red-orange or orange-red||RO/OR|
|yellow-green or green-yellow||YG/GY|
|strongly yellowish green||styG|
|slightly yellowish green||slyG|
|very slightly bluish green||vslbG|
|very strongly bluish||vstbG|
|green-blue or blue-green||GB/BG|
|very strongly greenish blue||vstgB|
The GIA Tone Scale helps you judge a gem's brightness or darkness. Three key standards to remember are (3) Light, (5) Medium. and (7) Dark.
Use the GIA saturation scale to judge a gem's strength of color. In warm colors, weaker saturations of 1, 2, or 3 appear brownish. In cool colors the same values look grayish. In both warm and cool colors, gems with saturations of 4, 5, or 6 are almost always more valuable if all other factors are equal.
|Name||Cool Color||Scale||Warm Color||Name|
|slightly grayish||2||slightly brownish|
|very slightly grayish||3||very slightly brownish|
|moderately strong||4||moderately strong|
Every sapphire we have is a unique stone created by mother nature, which is cut and polished to show off that one stone's color and luster, bringing out the individual character of each gem. Once the sapphire is certified, we hand pick a unique custom ring setting to be made, which is then set by hand for that stone. It takes approximately 3 - 4 months from when a sapphire is hand picked to having the sapphire set and listed for sale at wholesale price. We do keep a wide selection of loose natural sapphires in stock which are not set, so please contact us if you have any questions on any one of our natural sapphire rings or a custom ring setting which you might be considering.
We own our offices in Sri Lanka were we personally travel to throughout the year to buy our natural Ceylon sapphires from both the mines & markets with support from our full time gem-broker their cutting out all the middle-men, this allows us to buy the finest sapphire at prices not matched by anyone. Our natural sapphire go from the mine to custom rings designed by us & made by our jewelers giving our customers both trade & private buyers unique custom sapphire rings at wholesale prices or less.
Please contact us with any questions you have & see our page on “The Life of a Sapphire-http://www.sapphirerings.org/life-of-a-sapphire