At IGI, every diamond goes through a meticulous grading process to ensure confidence, consistency, and transparency for dealers and consumers. For more than 50 years, our precision protocols have made an IGI report a trusted resource worldwide. 🌎️ ✨️ Weight: Scales calibrated to four decimal places determine a diamond's carat weight, which is then reported to two decimal places. ✨️ Measurements: Our gemstone-specific optical measuring device creates a 3D digital rendering of the diamond, captur
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As creator of the Diamond 4Cs and the International Diamond Grading System™, GIA is the world’s trusted source for unbiased assessments. Learn more: http://bit.ly/2zX6lTl | 4Cs of Diamond Quality by GIA
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