For thousands of years Emeralds have been considered some of the most beautiful and valuable gems in existence. In many instances their value can exceed the value of a diamond of comparable carat weight. Emeralds are rare and precious gems of the beryl family, distinguished by their rich green color. The largest quantities of Emeralds are found in Brazil, Colombia and East Africa.
At EmeraldandGemstones.com our experienced gemologists carefully grade each Brazilian Emerald. Upon extraction from the mines in the state of Bahia, Brazil and the region of Minas Gerais, each gem is carefully cut, polished and calibrated. All stones arrive to our customers ready to be set in a piece of fine jewelry.
In addition to our high quality Brazilian Emeralds, we also offer other precious and semi-precious gemstones. These include Amethyst, Ametrine, Aquamarine, Citrine, Iolite, Peridot, Topaz, Tourmaline and more.
Emerald and Gemstones is a world-wide purveyor of the finest quality Brazilian Emeralds, precious and semi-precious gemstones. We offer only the highest quality merchandise. In business since 1981, our family owned and operated company began by offering gemstones from the mines of Bahia and Minas Gerais, Brazil, to the public at wholesale prices. We are committed to quality, excellence and customer satisfaction.
In addition to the gem color grading information below, learn more about gem tone, clarity, treatment methods, cuts, and some gem conventions .
Gemstone Color Grades
Emerald and Gemstones color scale is based upon our years of experience determining the intensity and purity of the primary color of a particular gemstone and therefore the desirability of the color within the gem. For example, the greener the Emerald, the lower the number will be on the scale. Emerald should have brilliant green as its primary color, so if it has around 85% and above primary color, it is graded #1. If it is 70-75% green, it is a #2, and so on.
We use this system, in conjunction with using words like “sky blue” to describe Aquamarine or “grass green” to describe Emerald or Peridot. Although these words sound descriptive, everyone can have their own interpretation of what color “grass green” really is, so it is necessary to also use a more standard form of measure.
A more accurate way to describe color is to assess the hue (color classification i.e. red, blue green, etc., in reference to the spectrum), tone (lightness or darkness), and saturation (color purity).
|1 to 1.75||Outstanding Quality||The very best and most sought after example of color in a gemstone.|
|2 to 2.75||Very High Quality||Very high quality. Precious and desirable. In most cases you will see 60% to 75% primary color.|
|3 to 3.75||Very Good Quality||This color is widely valued, but has a bit more secondary color. You should see somewhere between 45% and 60% primary color.|
|4 to 4.75||Good Quality||This grade is good for setting in fine jewelry for your everyday collection. You will see between 30% and 45% primary color.|
|5||Low Gem Quality||This grade is considered low gem quality. Examples of this color are more plentiful and considerably less in price.|
GIA-Type Color Scale
The charts below are based on the GIA (Gemological Institute of America) color stone grading system. The aspects of color with its three variables of tone, hue and saturation of a particular gemstone are listed. Normally you will see this system represented by a set of letters followed by numbers.Visible color and hues are represented by letters. The first number is the tone (lightness/darkness) of a gem. The second number is saturation of color in the particular gem. For example, when you see an Emerald assessed with the letter G indicating the color is green, primary with little or no secondary color or zoning. An assessed tone/saturation number of 7/6 making this jewel a green dark/strong or a G 7/6, is very high quality.
|strongly purplish Red||stpR|
|slightly purplish Red||slpR|
|strongly yellowish Green||styG|
|slightly yellowish Green||slyG|
|very slightly bluish Green||vslbG|
|very strongly bluish Green||vstbG|
|very strongly greenish Blue||vstgB|
|very slightly greenish Blue||vslgB|