Journal

Stories, guides & inspiration

Diamond guides, styling ideas and news from the OnlyRock studio.

A round brilliant diamond held in tweezers
The 4Cs · Part 1
Cut
Cut is the most important of the 4Cs. How a diamond handles light—its brightness, fire, scintillation and symmetry.
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A collection of fancy-shaped diamonds
The 4Cs · Part 2
Evaluating Fancy-Shaped Diamonds
Fancy shapes don’t receive a cut grade. The key factors that reveal how well a fancy-shaped diamond will perform.
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