For investment-grade blue diamonds, a report identifying the stone as "Natural" is essential [1]. 3. Evaluating Clarity and Cut
While high clarity is desirable, it is secondary to color in blue diamonds. Minor inclusions are common, but they should not affect the stone’s structural integrity or visibly mar its color.
Blue diamonds are exceptionally rare, with most of the world's supply coming from a few mines, such as the Cullinan mine in South Africa [1]. Because of their scarcity, they are considered an excellent store of wealth and often appreciate in value over time. 5. Where to Buy
Always examine the diamond in person or through high-quality imaging provided by a trusted source to understand its true color and brilliance.
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The cut is designed to maximize the intensity of the blue color rather than just brilliance. A superior cut will ensure the blue hue is evenly distributed throughout the stone. 4. Rarity and Investment Value