Diamond Price Calculator
Calculator Output
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Round 1.00 Carat G VS2
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Calculator Input
Diamond origin
Shape
Carat
Color
Clarity
How Our Price Calculator Works
Select Your Specs
Choose diamond type, certificate lab, shape, carat, color, clarity, and cut.
Read the Benchmark
We use benchmark fair-price data to show fair price, estimated range, price per carat, and recent trend.
Compare Listings
Open matching listings to compare current retailer prices before making a purchase decision.
What is included?
The calculator returns a Fair Price, Estimated Fair Range, Estimated Price per Carat, Last 30 Day Change, trend charts, and matching listings for the selected specs.
What is not included?
This is not an appraisal, resale value, insurance value, or offer to buy or sell. Real prices can vary by fluorescence, measurements, brand, availability, and retailer policy.
FAQ
Diamond Price Calculator Questions
Quick answers about how CaratRadar calculates diamond fair price, estimated range, price per carat, and market movement.
How does the CaratRadar diamond price calculator work?
The calculator matches your selected diamond specs against CaratRadar benchmark data built from active certified diamond listings. It returns a fair price, estimated fair range, price per carat, recent price trend, and matching listings.
What is the CaratRadar Fair Price Estimate?
The Fair Price Estimate is CaratRadar's market-backed estimate of what comparable certified loose diamonds are asking for online today. It is designed to help shoppers understand a reasonable current market price before comparing individual listings.
How do you calculate diamond price estimates?
CaratRadar groups comparable diamonds by diamond type, shape, carat band, color, clarity, cut, and certificate lab where relevant. The calculator uses benchmark prices from those groups, price-per-carat calculations, current listing data, and recent market movement to produce a fair price and range.
How accurate is the diamond price estimate?
The estimate is market guidance based on current online listings, not an appraisal. Accuracy is strongest for common categories with many active listings and can vary for rare specs, unusual measurements, fluorescence, brand effects, or limited data.
What is a fair price for a diamond?
A fair price is an estimated market price for a diamond category based on comparable certified listings. It is meant to help buyers understand whether a listing is priced within the current market band.
What does the estimated fair range mean?
The estimated fair range shows where similar certified diamonds commonly trade in today's online market. A very rare combination may have a wider range because fewer active listings are available.
Why is a jeweler quoting me higher or lower than the Fair Price Estimate?
A jeweler quote can include service, sourcing time, setting work, brand markup, return policy, financing, warranty, or a different quality screen than the basic 4Cs. The Fair Price Estimate is a market benchmark for comparable loose diamonds, not a final quote for every buying situation.
Why do retailer prices differ for the same type of diamond?
Retailers can price differently because of inventory source, supplier cost, return policy, shipping terms, financing, brand trust, customer service, and how strictly they screen diamonds beyond the certificate. A higher price is not always wrong, but it should be understood against comparable market listings.
How is price per carat calculated?
Estimated price per carat is the fair price divided by carat weight. It helps compare different sizes, but diamond pricing is not perfectly linear because prices often jump at important carat bands.
Why do similar diamonds have different prices?
Two diamonds with the same headline specs can still differ by certificate lab, fluorescence, measurements, polish, symmetry, table, depth, retailer policy, availability, and brand positioning.
Does certificate lab affect diamond price?
Yes. Certificate lab can influence buyer trust and market pricing. The calculator defaults to Any lab so users can see broad market guidance, but you can select GIA, IGI, or HRD when you want a narrower comparison.
Are lab grown diamonds priced differently from natural diamonds?
Yes. Lab grown and natural diamonds are separate markets with different supply, demand, and pricing behavior. Always choose the correct diamond type before comparing prices.
Are diamond prices going up or down?
The calculator includes recent trend charts so you can see whether prices for the selected category moved up or down over the last month. Broader market movements can differ by shape, carat, and diamond type.
Is this a resale value calculator?
No. CaratRadar estimates current online asking-price guidance. Resale value, trade-in value, insurance value, and appraisal value can be materially different.
How much is my diamond worth if I want to sell it?
The calculator can help estimate current retail asking prices for comparable diamonds, but resale value is usually lower than retail. A buyer, jeweler, dealer, or marketplace will typically account for risk, liquidity, margin, fees, and the time needed to resell the diamond.
Do diamonds lose resale value after purchase?
Often, yes. Retail prices include overhead, service, marketing, returns, financing, and profit margin. When a consumer resells a diamond, the buyer usually needs room to resell it profitably, so resale offers can be meaningfully below current retail asking prices.
Is this an appraisal?
No. The calculator is informational market guidance and is not a gemological appraisal, insurance appraisal, or offer to buy or sell a diamond.
Can I use this estimate for insurance or appraisal value?
Use it as a starting point only. Insurance and appraisal values may include the setting, replacement assumptions, local market factors, documentation, and appraiser judgment. For insurance, ask a qualified appraiser or insurer what documentation they require.
How often is the pricing data updated?
CaratRadar refreshes the calculator data daily from online retailer listings. Individual retailer availability and prices can still change between refreshes, so always verify the live listing before purchase.
Can jewelers or retailers use this data?
Yes. The public calculator is useful for quick market checks, while CaratRadar retailer analytics can provide pricing actions, exports, market rank, margin opportunity, and segment analytics. To review sample files or dashboard access, email [email protected].
Ask about retailer analyticsWhy are rare diamond categories less predictable?
Rare combinations such as very large carat weights, uncommon shapes, lower colors, high clarities, or limited certificate-lab coverage may have fewer comparable listings. When there is less market data, the range can be wider and the result should be treated as directional guidance.
What should I verify before buying a diamond?
Always verify the certificate number, lab report, measurements, fluorescence, return policy, shipping terms, availability, and final checkout price on the retailer website. The calculator is a market research tool, not a substitute for due diligence.