Lab-grown diamonds share the same chemical composition (pure carbon) and 4C grading standards as natural diamonds—with the added benefits of ethical sourcing, sustainability, and exceptional quality consistency.
Core 4C Standards for Lab-Grown Diamonds:
Carat (Weight)
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A unit of weight, not size—1 carat = 200mg, divided into 100 points (e.g., 0.50ct = 50 points).
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Common sizes: 0.25ct to 2ct+, with lab-grown diamonds offering consistent quality across all carat weights.
Clarity (Purity)
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Measures the absence of internal inclusions or surface blemishes, graded from IF (Internally Flawless) to I3.
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Lab-grown diamonds typically boast higher clarity (often VS1-VVS1) due to controlled cultivation, with minimal inclusions visible only under 10x magnification.
Color
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Graded on a scale from D (colorless) to M (faint yellow), with lab-grown diamonds predominantly falling in the D-J range (colorless to near-colorless).
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D-F: Colorless, G-H-I-J: Near colorless—both ranges deliver a bright, neutral appearance ideal for custom jewelry.
Cut
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The most impactful factor for sparkle, referring to proportions, symmetry, and polish that maximize light return.
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Top-tier "3EX" (Excellent Cut/Polish/Symmetry) lab-grown diamonds unlock supreme brilliance and fire, even with moderate color/clarity grades.
Popular Lab-Grown Diamond Shapes
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Round: Timeless and most popular, optimized for maximum sparkle.
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Oval: Elongated shape creates the illusion of length, flattering smaller hands.
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Pear: Teardrop design blends modern and vintage charm, appears larger than its carat weight.
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Emerald Cut: Broad flat planes and corner facets, ideal for those who favor understated elegance (best paired with high clarity).
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Princess: Contemporary square shape with exceptional sparkle, versatile for all settings.
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Cushion: Soft rounded corners, a royal favorite with classic appeal.
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Marquise: Curved pointed shape that elongates fingers and looks larger face-up.
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