The 75.47-carat Hooker Emerald was worn by Ottoman Sultan Abdul Hamid II, the last sultan of the Ottoman Empire. Photo by Chip Clark, courtesy Smithsonian Institution, National Museum of Natural ...

Consumers now, more than ever, have a heightened awareness of sustainably and ethically sourced products. The GIA Diamond Origin Report uses scientific evaluation to provide confirmation of a ...

Promotional OffersTake 20% Off New GIA Jewelry Services! Use Promo Code JEWELRY2025 GIA's legacy of rigorous standards, deep expertise, and advanced technology is now available for jewelry. Submit ...

Garnet Birthstone Meaning & History The name “garnet” originates from the medieval Latin granatus, meaning “pomegranate,” in reference to the similarity of the red color. Garnets have been used since ...

Ruby is the July birthstone – and it’s one of the most coveted of gems. The name is derived from the Latin word ruber, meaning “red” – the color of love and passion. Few things catch the eye like the ...

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Sapphire Birthstone Meaning & History The September birthstone has traditionally symbolized sincerity, truth, faithfulness and nobility. For countless centuries, sapphire has adorned royalty and the ...

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Birthstones for each month Birthstones are a fun, popular and colorful introduction to the world of gemstones. They appeal to audiences around the world regardless of gender, age, nationality or ...

LEARN THE TECHNIQUES USED BY DIAMOND GRADING EXPERTS The Diamond and Diamond Grading eLearning course brings to life the skills needed to grade the color, clarity and cut of diamonds through video, ...

Graduate Jeweler Program The Graduate Jeweler diploma program is a hands-on experience that introduces students to the knowledge and skills required for a career in jewelry fabrication and repair. You ...

Careers at GIACareers at GIA With a reach that spans the globe, GIA is a nonprofit institute dedicated to protecting consumers by ensuring their trust in gems and jewelry through cutting edge ...