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GIA sets the global standard for diamond grading. Explore our expertise and learn what makes a diamond truly exceptional.
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GIA sets the global standard for diamond grading. Explore our expertise and learn what makes a diamond truly exceptional.
Learn More
For nearly 100 years, GIA has helped advance the global diamond industry through innovation and education. A GIA Diamond Grading Report is more than the standard in diamond evaluation—it is the internationally trusted source for diamond quality reporting by jewelers, museums and auction houses.
View Diamond Grading ReportsFound in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem
Yellow-green gem variety of the mineral olivine. Found as nodules in volcanic rock, occasionally as crystals lining veins in mountains of Myanmar and Pakistan, and occasionally inside meteorites.
MORE ABOUT THIS GEM
Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem.
Dazzling brilliance. Captivating color. These are the planet’s most valued gems.
Diamonds are among nature’s most precious and beautiful creations.
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.
Citrine is the transparent, pale yellow to brownish orange variety of quartz.
The GIA (Gemological Institute of America) Diamond Grading Report is one of the most respected and trusted documents in the diamond industry. It provides a comprehensive assessment of an individual, loose natural diamond.
"Respected worldwide, GIA’s leadership in gemological science is founded on decades of research, education, and an uncompromising commitment to accuracy. As the world’s foremost authority in diamond grading and identification, GIA sets the global standard through scientific integrity, innovation, and transparency. Every GIA-certified diamond reflects a legacy of trust and a promise of excellence."
GIA (Gemological Institute of America) Reports are recognized worldwide as the gold standard for diamond and gemstone grading. These reports detail the quality, characteristics, and authenticity of diamonds, colored stones, and jewelry. They serve as a trusted reference for buyers, sellers, and jewelers globally.
Provides an unbiased assessment of a diamond’s 4Cs along with identification as natural or laboratory-grown.
Identifies a colored gemstone’s species, variety, and origin (when possible), including any treatments.
Evaluates and certifies the quality and authenticity of finished jewelry containing diamonds or gemstones.