About Carat Hunter
The diamond price comparison that retailers wish didn't exist.
We track nearly 12 million diamonds across 105+ retailers in 25+ countries. Same stone, different prices. We show you every one of them.
Why We Built This
Most online diamond retailers pull inventory from the same supplier networks. That means the exact same certified diamond, same GIA or IGI number, same physical stone, regularly appears at three, five, even ten different stores. Each retailer sets their own markup. And until recently, there was no practical way for a buyer to know.
We started Carat Hunter because we saw the gap firsthand. A 2 carat G VS2 Round listed at one store for $18,000 and at another for $27,000. Identical stone. The only difference was the retailer. The diamond industry has operated on information asymmetry for decades, and the internet only partially fixed it. Retailers got online, but comparison shopping across them remained nearly impossible.
So we built the tool we wished existed: a search engine that monitors every major online diamond retailer, matches the same stones by certificate number, and shows you exactly what each one charges. No commissions, no affiliate deals, no preferred partners. Just the data.
How It Works
Our systems monitor over 105 online diamond retailers around the clock, pulling inventory and pricing data from each. When the same certified diamond, matched by its GIA, IGI, or HRD certificate number, appears at more than one store, we flag it and show you every price side by side. Natural, lab grown, or both.
Prices update daily. When a retailer changes their price, adds new inventory, or removes a listing, we pick it up. The result is a live picture of the diamond market that would take an individual buyer weeks to assemble manually.
What You Can Do
The Caratlytics Score
Beyond the traditional 4Cs (Cut, Colour, Clarity, Carat), every diamond on Carat Hunter gets a Caratlytics Score from 0 to 100. It combines four factors into a single number so you can compare diamonds at a glance:
The score is not meant to tell you what to buy. It is a quick way to spot diamonds that punch above their weight and avoid ones that do not.
Meet Lucy
Lucy is our AI diamond expert, named after "Lucy in the Sky with Diamonds" by the Beatles. Think of the best sales assistant you have ever had at a high end jewellery store: someone who genuinely knows her craft, loves what she does, and is completely on your side. Except Lucy has 12 million diamonds in front of her and will actually tell you when something is overpriced.
Ask her anything. "Best 2 carat round under $15,000" or "is this diamond worth it?" or "compare these three stones for me." She searches the database, pulls up real options, and gives you her honest take. No scripts, no upselling, no hedging.
Completely Independent
We do not sell diamonds. We are not affiliated with any retailer, we do not take commissions, and we do not have preferred partners. Every retailer in our database is treated the same way. When we show you that a diamond is $4,000 cheaper at one store versus another, there is no incentive behind that other than giving you the information.
Our revenue comes from Carat Hunter Pass subscriptions, which unlock full retailer pricing, unlimited Lucy access, price tracking, and detailed reports. The free tier gives you access to search, scores, and a limited number of daily unlocks. Either way, the data is the same.
What the Data Shows
That is the difference between the cheapest and most expensive listing for the exact same certified stone. Same certificate number, same specs, different retailer, different price. These are not approximations. These are matched diamonds we track in real time across our entire database.
Built in Australia
Carat Hunter is designed and built in Melbourne, Australia. We launched in 2025 with a simple idea: diamond buyers deserve the same price transparency that exists in almost every other market. The diamond industry is one of the last where a buyer can pay thousands more than they need to simply because they did not know to check elsewhere. We are working to change that.