Lab diamonds use the same 4Cs grading as natural. Understand each factor to maximize value.
4Cs Overview
| C | Scale | Best Value Range | Impact |
|---|---|---|---|
| Color | D-Z | G-I | Visible to eye |
| Clarity | FL-I3 | VS-SI | 10x magnification |
| Cut | Excellent-Poor | Excellent | Most important for sparkle |
| Carat | Weight | 1-2ct | Price per carat |
Cut Is King
A well-cut 0.8ct outsparkles a poorly cut 1.0ct. Cut determines light return, fire, and scintillation. Holycome sources only Very Good to Excellent cut lab diamonds.
Value Optimization
G-I color + VS clarity + Excellent cut = best value. Most customers can't distinguish from D/FL with naked eye. Saves 30-40% vs top grades.
Frequently Asked Questions
What's the sweet spot for value?
G color, VS2 clarity, Excellent cut — indistinguishable from premium grades to the naked eye.
Are lab diamonds certified?
IGI is most common. GIA also certifies. Always buy certified.
Conclusion
Holycome sources IGI-certified lab diamonds for custom orders. Contact service@holycome.com.


