About

Who builds The Diamond Price

An independent technology and research platform working to make diamond pricing more transparent.

An independent platform, not a jewellery business

The Diamond Price is a small, independently run technology and research platform. We do not grade diamonds, certify diamonds, or sell them. What we do is track diamond listings at scale, publish what they show about market prices, and explain the method behind every figure.

We think that is the honest basis for trust in this category. Diamond pricing is opaque, and the usual response is to ask buyers to trust someone's credentials. We would rather show our work, including where it is uncertain.

Our methodology is the thing to check

Every price on this site is a median drawn from live retail listings, filtered by quality band so that the figure describes a diamond someone would actually buy. That distinction matters more than it sounds: a blended market-wide median mixes qualities together and can produce results that are plainly wrong.

Our published methodology sets out where the data comes from, why we use medians, why quality bands and shape-specific analysis are necessary, how often figures update, how we validate them - and the limitations we know about. If you want to judge whether our numbers are any good, that page is where to look.

Who started it

The Diamond Price was founded by Tomer Gil Levi, a technology entrepreneur and product builder. He previously founded Lucy Platforms, a technology company building commerce and data systems for the diamond industry, and built Get Diamonds for the World Federation of Diamond Bourses, which owns and operates it.

That work meant years spent close to large diamond inventories, supplier integrations and pricing data. It also made one gap obvious: buyers could see thousands of diamonds and still have no reliable way to tell whether a given price was fair. This platform exists to close that gap.

Tomer is not a gemologist. He does not grade or certify diamonds. His background is in building technology products around the diamond industry and designing systems that analyse pricing data at scale.

How we are funded

When you follow a link from this site to a retailer and go on to buy, we may earn a commission. That is how the platform is funded. It does not change the prices you see, and it does not determine which diamonds we show - our figures come from the listings themselves, and our ranking is based on price against the market median.

See what the data says

Check a fair market price for the diamond you are actually considering.

Support

FAQ

Everything you need to know about diamonds before you buy a diamond jewelry and billing. Can't find the answer you're looking for? please send us a message here
How is the price of a diamond determined?

When selecting a diamond, focus on the 4 Cs:

  • Carat: The weight of the diamond. Larger diamonds are rarer and usually more valuable.
  • Cut: This determines the diamond's brilliance and sparkle. Well-cut diamonds reflect light better.
  • Color: Ranges from colorless (most valuable) to light yellow. The less color, the higher the grade.
  • Clarity: Refers to the absence of inclusions and blemishes. Higher clarity means fewer imperfections.

These properties combined define the diamond's overall appearance and value. See the full 2026 diamond price chart for live prices by carat, gram and shape.

Why is technology unbiased in calculating diamond prices?
Technology, particularly AI in our price calculator, relies on data and algorithms, removing subjective human biases. It assesses thousands of data points objectively, ensuring consistent and fair evaluations. By analyzing market trends, past transactions, and current listings, it offers an unbiased, comprehensive view of the diamond's worth.
Can the Diamond Price Calculator predict future market trends?
While the Diamond Price Calculator excels at providing current market valuations based on extensive data, predicting future market trends involves variables beyond immediate data sets. Market trends can be influenced by global economic conditions, changes in supply and demand, and other unforeseen factors. The calculator is an excellent tool for current assessments but should be used in conjunction with market trend analysis for future predictions.
How can I trust the accuracy of the Diamond Price Calculator?
Our Diamond Price Calculator is built on a robust algorithm that analyzes data from over 30,000 diamond sources and 1.9 million individual diamonds , ensuring comprehensive market coverage. It continuously updates to reflect real-time market conditions, offering a reliable and accurate estimate of a diamond's value. The calculator's precision stems from its extensive data analysis, making it a trusted tool for buyers and industry experts alike. Additionally, its performance is regularly reviewed and updated to maintain accuracy and reliability in a dynamic market.
What factors can affect the overall price of a diamond ring?
The total cost of a diamond ring isn't just about the stone. Factors like the ring design, metal type, craftsmanship, and additional gemstones can influence the final price.
Is it better to buy diamonds online or in-store?
Buying diamonds online can offer a wider selection and competitive pricing, while in-store purchases provide a hands-on experience. Consider what's most important for your decision-making process.
How does the cut of a diamond impact its value?
The cut of a diamond greatly affects its brilliance and overall appearance. Well-cut diamonds can appear more luminous and valuable, even if other factors like carat weight are the same.
Can the diamond price calculator help with choosing the best cut?
Yes, the calculator can provide insights into how different cuts affect price, helping you balance aesthetic preferences with budget considerations.
Why do identical diamonds sometimes have different prices?
Prices can vary due to differences in diamond certification, seller markup, and current market demand. Even seemingly identical diamonds might have subtle differences affecting their valuation.
Does the diamond price calculator consider the diamond's origin?
Yes, the calculator takes into account the diamond's origin, as it can influence the value due to factors like ethical sourcing and rarity.
How often are the prices updated in the diamond price calculator?
The calculator updates regularly to reflect the latest market data, ensuring you get the most current pricing information available.
What is the most important factor to consider when buying a diamond for an engagement ring?
While personal preference is key, many consider the cut and clarity paramount for an engagement ring, as these greatly affect the diamond's sparkle and appearance.
How can I ensure the diamond I purchase is ethically sourced?
Look for diamonds certified by organizations that enforce strict ethical standards, and consider buying from retailers who provide detailed sourcing information.
Can the diamond price calculator assist with investment decisions?
While it provides current market values, investment decisions should also consider long-term market trends, rarity, and the specific qualities of individual diamonds .

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