What Are the 4Cs of Diamonds?
The diamond 4Cs guide is the global standard for evaluating diamond quality. Learning how each C affects appearance helps you make a confident and informed choice.
Cut – The Sparkle Factor
The cut measures how well a diamond is shaped and faceted. A well-cut diamond reflects light beautifully, creating exceptional sparkle. Even with perfect color and clarity, a poorly cut diamond may look dull.
Tip: Always prioritize an excellent or very good cut for maximum brilliance.
Color – The Shade of Purity
Diamonds are graded on a scale from D (colorless) to Z (light yellow/brown). The closer a diamond is to colorless, the higher its value. Many near-colorless diamonds (G–J range) offer excellent beauty and better value.
Tip: White gold or platinum settings can make diamonds appear whiter.
Clarity – The Flawless Factor
Clarity measures the presence of inclusions (internal) and blemishes (surface). Most inclusions are microscopic and do not affect beauty to the naked eye.
Grades range from Flawless (FL) to Included (I1–I3).
Tip: VS or SI range offers the best balance of beauty and value.
Carat Weight – The Size Indicator
Carat measures a diamond’s weight, not just its size. Larger carat weights are rarer and more expensive, but cut quality also affects perceived size.
Tip: A well-cut 0.9-carat diamond can look as brilliant as a 1-carat at lower cost.
Why the 4Cs Matter for Lab-Grown Diamonds
Lab-grown diamonds share the same physical, chemical, and optical properties as mined diamonds. Evaluating the 4Cs for lab-grown diamonds follows the same standards, ensuring exceptional beauty and transparency in quality.
Shop Diamonds with Confidence
Understanding the 4Cs empowers you to make the right choice. At LabGrownBox, we provide certified diamonds, expert guidance, and a transparent process to help you find the perfect stone for your unique moment.
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