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Abstract geometric diamond shapes geo print. Seamless vector pattern. Mint, blush pink, mustard yellow, teal retro colors background. Fashion fabric patchwork design. Retro mid century wallpapers.

Despite the commercial value of natural-color diamonds, distinguishing them from treated diamonds remains a significant identification challenge. While some diagnostic visual features exist ...

Figure 1. The strong color zoning in this Fancy Dark orangy brown diamond was visible at 10× magnification. Photo by Troy Ardon. A 2.08 ct emerald-cut diamond recently submitted to the Carlsbad ...