Guide
The 4Cs
Four qualities define every diamond: Cut, Color, Clarity, and Carat. Understanding them helps you get the most beauty for your budget — and make a choice you will love forever.
Cut
The most important C for beauty
Cut determines how well a diamond sparkles. It's about the angles and proportions that let light bounce around inside and shoot back to your eye as brilliance.
A well-cut diamond dances with light. A poorly cut one looks dull even if it's big and clear. Cut is the most important C for beauty — never compromise here.
Interactive — explore cut grades
Perfect proportions. Maximum light return.
★ Our recommendation — always choose Ideal or Excellent
Color
D–Z scale · G–H is the sweet spot
Diamond color grades how “white” or colorless a diamond is. The scale runs from D (perfectly colorless) to Z (light yellow).
Most people cannot tell the difference between a few grades, especially once the diamond is set in a ring. We recommend G–H for best value — looks white, costs less than D–F.
Interactive — tap a grade
G — Near Colorless
Recommended: looks white, exceptional value
Clarity
FL–I · VS2–SI1 is the sweet spot
Clarity measures tiny natural marks inside or on the surface of a diamond. These are called inclusions and blemishes. They form during the diamond's growth — in nature or in the lab.
Most are invisible to the naked eye. We recommend VS2–SI1 for the sweet spot: looks perfect to the eye, significant savings over “flawless” grades.
Interactive — explore clarity grades
VS2 — Very Slightly Included
Price tier: Good Value
Clean to the naked eye — inclusions require magnification to see.
Carat
Weight · 1 carat = 0.2 grams
Carat is simply weight — how big the diamond is. One carat equals 0.2 grams. Bigger costs more, but cut matters more for beauty.
A well-cut 1-carat diamond can look more impressive than a poorly cut 1.5-carat. And with lab-grown, your budget stretches significantly further — so you can choose a larger stone without sacrificing cut or clarity.
Interactive — explore carat sizes
Visual size comparison (relative proportions)
Our Sweet Spot Recommendation
For the best combination of beauty and value in a lab-grown diamond:
C
Ideal or Excellent
Never compromise here
C
G or H
Eye-white at great value
C
VS2 or SI1
Eye-clean, smart savings
C
Your choice
Budget goes further with lab-grown
Apply what you know
Now that you understand the 4Cs, use them in our ring builder. Every filter makes sense.