Diamond Cut Guide
Cut is the single most important of the 4Cs because it controls how light moves through the stone. This guide explains cut grades, why an excellent cut matters, and how to balance cut with your budget.
Why Cut Matters More Than Carat
Two diamonds of the same carat weight can look completely different if one is cut poorly. A well-cut stone returns light through the crown and creates brilliance, fire and scintillation; a deep or shallow cut lets light leak from the bottom and looks dull. This is why jewelers say cut is king.
Browse our factory-direct engagement rings to see how cut transforms the same carat weight.
Cut Grades Explained
| Grade | Light Performance | Best For |
|---|---|---|
| Excellent | Maximum brilliance and fire | Engagement rings, heirlooms |
| Very Good | Strong sparkle, minor loss | Value-focused buyers |
| Good | Solid sparkle, visible trade-offs | Budget daily jewelry |
| Fair to Poor | Noticeably dull | Avoid unless deeply discounted |
How to Choose the Right Cut for Your Budget
For round brilliants, insist on Excellent cut; for fancy shapes such as pear, oval and emerald, Very Good is usually the sweet spot because the market prices fancy cuts lower per carat. If your budget is tight, drop carat weight before you drop cut grade.
A well-cut lab-grown diamond delivers the same sparkle as a mined stone at roughly half the price. Ask us for the cut grade and a motion video before you decide, or message WhatsApp.
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Factory-direct pricing from our Panyu, Guangzhou workshop. Our team will reply within 24 hours with pricing and availability.
Get a Free Quote Chat on WhatsAppFrequently Asked Questions
Why is diamond cut more important than color?
Cut controls light return, which is what makes a diamond sparkle. Color differences are subtle at eye level, while a dull cut is obvious to everyone.
What is the best cut grade to buy?
Excellent for round brilliants and Very Good or better for fancy shapes. Avoid Good or lower unless the price is exceptional.
Does cut grade affect price a lot?
Yes. Excellent-cut diamonds can cost 20-40% more than Good-cut stones of the same carat, and the difference is visible in person.