Diamond Price Calculator
Estimate the approximate price of a natural or lab-grown diamond based on carat weight, shape, cut, color, and clarity.
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This estimate is for comparison purposes and is not a guaranteed market quote.
Your Diamond Details
How to Use the Diamond Price Calculator
Using the calculator is simple:
- Select Natural or Lab-Grown diamond.
- Choose the diamond shape.
- Enter the carat weight.
- Select the cut grade.
- Select the color grade.
- Select the clarity grade.
- Click Calculate Diamond Price.
The calculator will show an estimated price range, estimated price per carat, and a summary of the diamond specifications you entered.
How Diamond Prices Are Estimated
Diamond pricing is influenced by several characteristics, with the 4Cs providing the standard framework for describing diamond quality: Cut, Color, Clarity, and Carat Weight. GIA describes these four characteristics as the defining factors used to evaluate diamonds.
Our calculator combines these characteristics with the selected diamond type and shape to produce an estimated price range.
Carat Weight
Carat refers to a diamond’s weight, not its physical size. One carat equals 0.20 grams. Larger diamonds are generally rarer, so carat weight can have a substantial effect on price.
However, two diamonds with the same carat weight can have very different prices because their cut, color, clarity, shape, and other characteristics may differ.
Cut
Cut describes how well a diamond’s proportions and facets interact with light. A well-cut diamond can display greater brightness, fire, and scintillation.
For this reason, cut can have a significant influence on both appearance and price.
Color
For standard colorless diamonds, the GIA color scale runs from D to Z, with D representing the highest degree of colorlessness. Differences in color can affect a diamond’s appearance and value.
Our calculator uses D through K for the color selection.
Clarity
Clarity describes the presence, size, and position of inclusions and blemishes within or on a diamond. Higher clarity grades generally indicate fewer or less noticeable clarity characteristics.
A higher clarity grade can increase price, although a lower clarity diamond may still appear clean to the naked eye depending on the stone.
Natural vs. Lab-Grown Diamonds
The calculator allows you to choose between natural and lab-grown diamonds because the two categories can have substantially different pricing.
Natural diamonds form naturally in the Earth, while lab-grown diamonds are produced using technological processes.
The price of an individual diamond still depends on its characteristics, so diamond type should be considered alongside carat, cut, color, clarity, and shape.
How Diamond Shape Affects Price
Shape and cut are not the same thing.
Shape describes the diamond’s outline, such as:
- Round
- Oval
- Princess
- Cushion
- Emerald
- Pear
- Marquise
- Radiant
- Asscher
- Heart
Cut describes how the diamond has been proportioned and finished to interact with light.
Different shapes can have different pricing patterns because of factors such as popularity, rough-diamond yield, cutting requirements, and market demand. Therefore, two diamonds with the same carat, color, clarity, and cut grade can still have different prices based on shape.
Understanding Your Diamond Price Estimate
The calculator provides three main figures:
Estimated Price Range
A lower-to-higher estimate based on the specifications entered.
Estimated Price Per Carat
An approximate price per carat for the selected diamond specifications.
Diamond Summary
A quick overview of the diamond type, shape, carat weight, cut, color, and clarity used in the calculation.
Use the result as a comparison and planning tool, rather than as a quote for a specific diamond.
Example: How Diamond Specifications Affect Price
Consider two diamonds that are both 1.00 carat.
If one has a higher color grade, higher clarity, and stronger cut quality than the other, the two diamonds can have significantly different prices even though they weigh exactly the same.
This is why looking only at carat weight is not enough when comparing diamonds. The combination of the 4Cs and other characteristics determines the overall value of an individual stone.
How Accurate Is the Diamond Price Calculator?
This calculator provides an approximate reference estimate, not an exact market quotation.
Actual diamond prices can vary because of:
- Supplier and retailer pricing
- Diamond availability
- Certification
- Market conditions
- Individual diamond proportions
- Fluorescence and other characteristics
- Treatment or special characteristics
- Differences between individual stones with similar grades
Even two diamonds with similar grading information can look different in person, which is why GIA recommends reviewing a reputable grading report when purchasing a diamond.
For a purchase, use the calculator to establish a reasonable reference point and then compare it with actual diamonds and their grading reports.
Tips for Getting Better Value From a Diamond
If you’re shopping on a budget, don’t automatically choose the highest possible grade in every category.
Instead, compare diamonds across the 4Cs and focus on the characteristics that are most noticeable to you.
For example, a diamond with excellent visual performance and slightly lower color or clarity may offer better value than paying a large premium for grades that make little visible difference to the unaided eye. GIA notes that many clarity characteristics in VS-range diamonds may not be visible without magnification.
Always compare the actual diamond, its grading report, and its price rather than relying on grades alone.
Disclaimer
This calculator is provided for informational and estimation purposes only. It does not provide a guaranteed retail price, appraisal, valuation, or investment recommendation.
Diamond prices vary by individual stone, supplier, market, certification, and other characteristics. Always compare the calculator’s estimate with current prices for comparable diamonds and review the diamond’s grading report before making a purchase.
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