Research Article Search Results

Learn the basics of the GIA Cut Grading System to help pick out the diamond that wows you.

These tips will help you make sure your diamond shines its best for any occasion.

Join GIA’s recent field expedition to the ruby rush in Madagascar’s Zahamena National Park.

You can buy a diamond with confidence when you follow these tips.

Looking to buy a diamond online? We have 10 tips to help you click the “Buy Now” button with confidence.

Follow these tips to pick out the perfect engagement ring for the love of your life.

Learn more about one of the Earth’s most fascinating creations, including some that became the most famous.

Advancing CVD growth technologies yield intensely colored, high-quality synthetic diamonds, such as the two green-blue synthetic materials seen in the New York lab.

Explores the history, geology, and current production of this unique source of large diamonds.

An assembled mabe pearl contains a fluted object, the function of which is unknown.

An emerald reportedly from Madagascar is cut to show asterism, a rare phenomenon in this material.

Proposes a model for trapiche emerald formation based on petrographic, spectroscopic, and chemical examination.