Lab-grown diamonds use the same 4Cs grading scale as natural diamonds (D-Z for color, FL-I3 for clarity) to evaluate quality, with most high-quality stones falling in the D-G (colorless) and VVS1-VS2 (very slightly included) range
Lab-Grown Diamond Color Chart
Diamond color is graded by the absence of color. Lab-grown diamonds are often created with high color purity.
| Grade | Category | Description |
|---|---|---|
| D – F | Colorless | Highest quality, extremely rare and most expensive. |
| G – J | Near-Colorless | Excellent value; no visible color to the naked eye, especially in lower-grade color metals like yellow/rose gold. |
| K – M | Faint Tint | A slight, noticeable warmth (yellow/brown). |
| N – Z | Light Tint | Noticeable yellow or brown tint. |
- Tip: For white gold or platinum, aim for D-G. For yellow or rose gold, G-J or even K-M can appear colorless, saving significant money.
Lab-Grown Diamond Clarity Chart
Clarity measures internal flaws (inclusions) and surface imperfections (blemishes) under 10x magnification.
| Grade | Definition | Description |
|---|---|---|
| FL/IF | Flawless / Internally Flawless | No internal/external flaws. Exceptionally rare. |
| VVS1/VVS2 | Very, Very Slightly Included | Minute inclusions, almost impossible to see even for professionals. |
| VS1/VS2 | Very Slightly Included | Inclusions are small and not visible to the naked eye. |
| SI1/SI2 | Slightly Included | Inclusions are visible under 10x magnification, usually “eye-clean” (clean to the naked eye). |
| I1 – I3 | Included | Inclusions are obvious to the naked eye and may affect brilliance. |
- Tip: VS2 or SI1 grades often provide the best value, as they are usually “eye-clean,” meaning imperfections are not visible without magnification.
Key Considerations for Lab-Grown
- Color Discrepancies: Lab diamonds (especially HPHT method) can sometimes display blue hues.
- Inclusions: Lab-grown diamonds, particularly CVD-grown ones, may have unique inclusions like needles or clouding.
- Best Value Spot: Many experts recommend a G-H color and VS1-VS2 clarity for the perfect balance of quality and price.
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