Price per carat and total
From the asking prices of comparable diamonds listed on IDEX, for the grade you chose.
Diamond Pricing
The price of any diamond specification, its range today and how it moved, up to the full history since 2005, and a market-based value for one particular diamond.
Five tools on the IDEX market record: look up a price, follow its movement up to the full history since December 2005, compare two diamonds, read a whole price grid at once and value a specific diamond with the evidence behind it.
Use it in
IDEX Retailer HubYour websiteData Platform API
Real IDEX data. The tool labels each figure for what it is.tools.idexonline.com
Price Lookup · Price Movement
From a specification to a price in one step.
Pick shape, carat, colour and clarity, and optionally cut grade and lab; the price updates as you choose. IDEX shows the price per carat and the indicative total for the weight, where the diamond sits in today's range, and how its price moved over the period you choose.
- ShapesRound and the IDEX catalogue fancy shapes
- WeightsUp to 9.99 ct
- GradesColour D–P, clarity IF–I3
- Periods1M · 3M · 6M · 1Y · 3Y · 5Y · Max
- HistorySince 14 December 2005, where the market lists the specification
Today's low and high
The spread for the same diamond today, so you see where a particular stone sits.
Movement, gaps said
Every snapshot up to a year, weekly for 3Y and 5Y, monthly for Max. Hollow points mark IDEX estimates for days without listings.
Diamond Comparison
Two diamonds, one decision.
Put two specifications side by side and see both prices, the difference per carat in per cent and in amount, and both price histories on one chart, optionally indexed to 100 on their first common day. In the Hub, "Compare this diamond" takes a diamond straight from Price Lookup into a comparison.
- DifferencePer cent, per carat and total
- HistoryBoth diamonds on one chart
- ShortcutsSwap, copy A to B
Indications from IDEX market data, not offers.tools.idexonline.com
Diamond Price Matrix
The whole grade grid of a shape and weight, at a glance.
Every colour and clarity in one table: the compact grid D–J × IF–SI2 or all grades D–P × IF–I3, showing the low, average or high per carat. Matrix History compares the grid with any earlier date back to 14 December 2005, and shows exact dates only.
Indications from IDEX market data, not offers.tools.idexonline.com
Diamond Valuation
A value for one particular diamond, with the evidence behind it.
Enter a natural diamond's grades, or in the Retailer Hub let IDEX read them from its grading report, and IDEX values it from the asking prices of comparable diamonds listed on IDEX on that day: the latest day or any exact day since December 2005. Below the minimum of comparable listings, it gives no figure.
- BasisListed asking prices of comparable natural diamonds
- DaysThe latest day, or any exact day since 14 December 2005
- In the Retailer HubEvidence and range, evolution since a past day, several days or diamonds side by side, certificate reading, professional and customer reports, saved valuations
- On your websiteVisitors value their diamond, see your selling price, download a report and ask you to contact them
Why retailers use it
- Turn "what is my diamond worth?" into a conversation: website visitors leave their details, and their requests reach you in the Retailer Hub.
- Answer valuation questions at the counter with the same market evidence every time, and a report your customer can keep.
- Show your own selling price, calculated from your pricing rules, next to a dated market basis.
A market-based indication from listed asking prices: not an appraisal, insurance or resale value, and not an offer. Laboratory-grown diamonds are not valued. Certificate reading uses IDEX AI Credits.
Shown with a retailer's selling price, as on a retailer's website.tools.idexonline.com
How a price is made
Every figure says what it is.
Listed asking prices
Prices come from diamonds listed on IDEX, per carat, for the grade you chose. They are asking prices, not transaction prices, and an indication, not an offer. Diamond Valuation values one particular stone from the same data, as a market-based indication, not an appraisal.
Updated through the day
Today's prices are updated several times a day and marked provisional; the update after 23:58 UK time is final for the day.
Your own selling prices
In retail mode, Price Lookup, Comparison, the Price Matrix and Diamond Valuation show your selling prices, calculated from IDEX market prices with your pricing rules in the Retailer Hub.
Estimates are marked
On a day without listings for a grade, IDEX estimates the price and marks the point as an estimate. Gaps are said, never bridged silently.
Where you use it
In your workspace, on your website, in your systems.
One set of IDEX market data behind every channel: a figure means the same in the Hub, on your website and in the API.
Your team's workspace
Sign in and use the tool with your other IDEX tools in the Workspace, in 6 languages.
EnglishDutchFrenchGermanItalianSpanish
On your own website
Put the tool on your website with the embed code the Hub gives you, styled to your brand in the Widget Designer.
<!-- embed code from the Retailer Hub --> <script async src="https://tools.idexonline.com/idex-tools.js"></script> <idex-diamond-pricing deployment-id="dep_…"></idex-diamond-pricing>
In your own systems
The same figures in your own systems over the documented REST API of the IDEX Data Platform, with an API Explorer in the Hub.
GET data.idexonline.com/v1/pricing/quote
?shape=round&carat=1.00&color=G&clarity=VS2 Get Access
Use Diamond Pricing in your business.
Request access for your company. After IDEX approves it, you choose your products in the IDEX Retailer Hub.
01Request access with your company details
02Confirm your email address
03IDEX reviews your request by hand
04Sign in to the Retailer Hub and choose your products