Diamond Value Calculator
Estimate the market value of a diamond based on the 4Cs (Carat, Color, Clarity, and Cut).
Estimated Retail Value
How Diamond Value is Calculated
The value of a diamond is determined by the "4Cs," a system established by the GIA (Gemological Institute of America) to provide a universal language for gemstone quality. Our calculator uses a sophisticated algorithm to weight these factors against current market benchmarks.
1. Carat Weight
Carat refers to the diamond's weight, not its physical size. Interestingly, diamond prices do not increase linearly with weight. A 2.0-carat diamond is significantly more expensive than two 1.0-carat diamonds because larger, high-quality stones are much rarer in nature.
2. Color Grade
The color scale for white diamonds ranges from D (colorless) to Z (light yellow or brown). The less color a diamond has, the higher its value. D, E, and F grades are considered colorless and command the highest premiums.
3. Clarity Grade
Clarity measures the internal "inclusions" and surface "blemishes" of a stone. From Flawless (FL) to Included (I3), the fewer the imperfections, the more valuable the stone. "Eye-clean" diamonds (usually VS2 or higher) are highly sought after for their balance of beauty and value.
4. Cut Quality
Often considered the most important "C," the cut determines how the diamond reflects light. A poorly cut diamond will appear dull even if it has perfect color and clarity. An Excellent or Ideal cut maximizes brilliance and fire.
Valuation Examples
| Carat | Color/Clarity | Shape | Estimated Value |
|---|---|---|---|
| 1.00 ct | G / VS2 / Excellent | Round | $6,500 – $8,200 |
| 0.50 ct | E / VVS1 / Very Good | Princess | $1,800 – $2,400 |
| 2.00 ct | H / SI1 / Good | Emerald | $12,000 – $15,500 |