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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

In the midst of the winter season, give a loving look at our favorite blue gemstones and jewelry. From a blue star sapphire to a vivid blue diamond, each of the featured blue gemstones below promises a cool blue hue to take you through the rest of the winter. (more…)

Found only in a few places on earth, turquoise is the second of December’s two official birthstones. Sought after for its robin’s egg blue and unique spiderweb-like patterns, it’s a perfect gem for unusual jewelry designs. (more…)