Diamond Education

Understanding the 4Cs—Cut, Color, Clarity, and Carat—is the key to choosing a diamond that sparkles for a lifetime.

Every diamond is unique. The 4Cs are the globally accepted standard for assessing the quality of a diamond. At NIRA, we believe in complete transparency, helping you balance these four factors to find the perfect stone for your budget.

01

Cut

Often considered the most important of the 4Cs, "Cut" does not refer to the shape (e.g., oval or round), but to how well the diamond's facets interact with light. A well-cut diamond reflects light internally and directs it back through the top, creating that signature fire and brilliance.

If a diamond is cut too deep or too shallow, light leaks out the sides or bottom, making the stone appear dull regardless of its color or clarity.

NIRA Tip: Never compromise on Cut. We recommend an "Excellent" or "Ideal" cut grade to ensure maximum sparkle.
02

Color

Diamond color actually refers to the lack of color. The GIA scale ranges from D (Colorless) to Z (Light Yellow). The closer a diamond is to "Colorless," the rarer and more valuable it is.

D-F: Colorless (The rarest and most premium).
G-J: Near Colorless (Excellent value; looks white to the naked eye).
K-Z: Faint to Light Yellow.

NIRA Tip: For the best value, choose a diamond in the G or H range. It will appear bright white in a setting but cost significantly less than a D or E.
03

Clarity

Clarity measures the purity of the diamond. It evaluates the presence of internal characteristics (inclusions) and surface irregularities (blemishes). The scale ranges from FL (Flawless) to I (Included).

Most inclusions are microscopic and cannot be seen without 10x magnification. A diamond is considered "Eye-Clean" if no imperfections are visible to the naked eye.

NIRA Tip: You don't need a Flawless diamond. We suggest VS1 or VS2 grades, which are eye-clean and offer fantastic value.
04

Carat

Carat Weight refers to the physical weight of the diamond, not its size. While heavier diamonds are often larger, the cut can influence how big the diamond appears.

Carat weight has the biggest impact on price. Prices jump significantly at "magic numbers" (e.g., 1.00ct, 1.50ct, 2.00ct).

NIRA Tip: To save money without sacrificing the look, consider buying slightly "shy" of the magic number (e.g., a 0.95ct instead of 1.00ct).