Gemstones
Diamond Price Calculator
Estimate diamond price from carat weight and quality factors including cut, color, clarity, shape, fluorescence, and certification — with clear per-carat and total breakdowns.
Diamond Pricing & Comparison Estimator
Start with a base price per carat, apply quality multipliers, then add markup, discount, fees, and tax to estimate an all-in diamond price.
Enter a realistic base price per carat for your market. Multipliers are planning controls and will not exactly match live diamond exchanges or dealer sheets.
If you already know the combined multiplier for each diamond, you can compare quickly without selecting every grade. Use the Single Diamond tab for a detailed breakdown.
Diamond pricing often jumps at size thresholds (e.g., near 0.50, 1.00, 1.50). This mode gives a planning estimate, not a guaranteed achievable size.
| Factor | Why it matters | How to use it |
|---|---|---|
| Carat threshold | Price/ct often increases at “magic sizes” | Use market adjustment or base price changes to reflect thresholds |
| Cut quality | Drives brightness, fire, and overall beauty | Prioritize cut if you want strong face-up appearance |
| Color and clarity | Rarity and visual cleanliness affect value | Test multiple combinations to see cost sensitivity |
| Shape | Round often commands a premium | Use shape adjustment to model non-round discounts |
| Fluorescence | Can impact appearance and market preference | Apply a conservative discount for strong fluorescence if needed |
| Certification | Confidence affects pricing and resale | Model discounts for uncertified stones and premiums for trusted labs |
| Markup/discount | Transaction structure changes final number | Separate “stone value” from retail margins and negotiated deals |
For best results, set a base price per carat from the same market context you are comparing (retail vs wholesale, natural vs lab-grown, certified vs uncertified).