GIA Certified Diamonds
Brilliance relies on highly regarded laboratories such as the GIA (Gemological Institute of America) to certify every loose diamond we offer. The GIA uses universally recognized standards for grading diamonds. When a diamond is accompanied by a GIA certificate, the consumer is assured that the stone has been analyzed by an unbiased gemologist who upholds the highest standards of integrity, science, and professionalism.
Shop the selection of GIA certified diamonds below and narrow your search by choosing additional filters. For assistance, contact a Brilliance diamond and jewelry expert at 866-737-0754.
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0.23 Carat Cut Loose Diamond, E Color, SI1 Clarity, Very Good Cut, GIA Certified
0.23 carat shape diamond, E color, SI1 clarity, Very Good cut, GIA certified diamond from Brilliance.
Additional Information
0.18 Carat Cut Loose Diamond, H Color, VVS2 Clarity, Excellent Cut, GIA Certified
0.18 carat shape diamond, H color, VVS2 clarity, Excellent cut, GIA certified diamond from Brilliance.
0.18 Carat Cut Loose Diamond, F Color, VVS2 Clarity, Ideal Cut, GIA Certified
0.18 carat shape diamond, F color, VVS2 clarity, Ideal cut, GIA certified diamond from Brilliance.
0.18 Carat Cut Loose Diamond, E Color, VS2 Clarity, Good Cut, GIA Certified
0.18 carat shape diamond, E color, VS2 clarity, Good cut, GIA certified diamond from Brilliance.
0.23 Carat Cut Loose Diamond, E Color, SI2 Clarity, Excellent Cut, GIA Certified
0.23 carat shape diamond, E color, SI2 clarity, Excellent cut, GIA certified diamond from Brilliance.
0.18 Carat Cut Loose Diamond, D Color, VS2 Clarity, Ideal Cut, GIA Certified
0.18 carat shape diamond, D color, VS2 clarity, Ideal cut, GIA certified diamond from Brilliance.
0.18 Carat Cut Loose Diamond, D Color, VS2 Clarity, Ideal Cut, GIA Certified
0.18 carat shape diamond, D color, VS2 clarity, Ideal cut, GIA certified diamond from Brilliance.
0.23 Carat Cut Loose Diamond, D Color, VS2 Clarity, Good Cut, GIA Certified
0.23 carat shape diamond, D color, VS2 clarity, Good cut, GIA certified diamond from Brilliance.
0.19 Carat Cut Loose Diamond, F Color, VS1 Clarity, Super Ideal Cut, GIA Certified
0.19 carat shape diamond, F color, VS1 clarity, Super Ideal cut, GIA certified diamond from Brilliance.
0.18 Carat Cut Loose Diamond, D Color, SI1 Clarity, Ideal Cut, GIA Certified
0.18 carat shape diamond, D color, SI1 clarity, Ideal cut, GIA certified diamond from Brilliance.
Certified Diamonds
A diamond certificate is an easily understood document prepared by an expert gemologist that describes the key characteristics of a certified diamond. A certificate from a gemological laboratory such as the GIA verifies the quality of a loose diamond and allows non-experts to make educated buying decisions.
The Gemological Institute of America (GIA)
Founded in 1931, the Gemological Institute of America (GIA) is an independent, non-profit organization widely considered as the world’s foremost authority in gemology. Introduced in 1953, their diamond and gemstone grading system is recognized as an accepted standard worldwide. Gemstone manufacturers from around the globe send loose diamonds and gems to the GIA for expert examination and analysis.
The GIA’s mission is to increase consumers’ trust in diamonds and jewelry by providing jeweler and consumer education, conducting meticulous research, and developing state-of-the-art laboratory instruments for loose diamond inspections.
GIA certified diamonds are examined by a minimum of four highly trained diamond graders and gemologists. At each step of a loose diamond’s evaluation, a more senior staff member independently grades the stone. To ensure impartial evaluations, the distribution of diamonds to graders is a completely random process.
After a diamond’s carat weight is determined, its measurements, depth, table, angles, culet, and girdle thickness are recorded. Then, the diamond’s color is graded on a scale ranging from D (colorless) to Z (light yellow) by comparing it to master stones of predetermined color. Clarity is assessed on a scale ranging from FL (flawless) to I3 (included) based on an examination of the stone under a binocular microscope of 10x magnification. The stone’s characteristics are plotted on a diamond diagram. Cut grade is established based on the analysis of the diamond’s craftsmanship and light interaction and is graded on scale ranging from Excellent to Poor. The level of a diamond’s craftsmanship is determined by evaluating its polish (graded Excellent to Poor), symmetry (graded Excellent to Poor), and proportions. The stone’s light interaction is based on its brightness, scintillation, and fire.
The GIA Diamond Grading Report is issued for loose diamonds that fall in the D-Z color range. This detailed report includes a full quality analysis of shape and cutting style, measurements, carat weight, color grade, clarity grade, cut grade, polish and symmetry assessments, and fluorescence. The report also includes a plotted diagram indicating the relative size and location of diamond clarity characteristics, a proportion diagram, and GIA grading scales.
The GIA Diamond Dossier® is issued for loose diamonds between 0.15 and 1.99 carats that fall in the D-Z color range. This report includes all of the information featured in the Diamond Grading Report without a plotted diagram. All certified diamonds accompanied by a Diamond Dossier are laser inscribed and registered in the GIA inscription registry.
