High impact
Size & Shape
Carat is the single biggest driver — doubling weight roughly quadruples the price at the same quality. Shape stacks on top: rounds carry a 10–30% premium over ovals, cushions, emeralds and pears.
How It Works: Diamond Price Calculator & Valuation Guide
How it works?
Find your perfect diamond in 3 simple steps
1
Tell us what you want
Pick your diamond shape, size, and budget in seconds.
2
We find the best deals
Our AI scans 500,000+ diamonds to find you the lowest prices.
3
Buy with confidence
Compare prices, choose your diamond, and purchase from verified sellers.
Diamond Price Calculator
Live Market Data
500,000+ diamonds tracked in real time
How Much Is a Diamond Worth?
Answer a few questions to calculate your diamond’s or engagement ring’s Fair Market Price using live pricing from thousands of comparable diamonds across trusted retailers.
Choose a diamond shape
Best Value
Round
Maximum Sparkle
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Romantic Glow
Oval
Looks Larger for the Same Budget
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Premium Look
Emerald
Elegant, Understated Luxury
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Princess
Modern Brilliance
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Cushion
Soft Vintage Sparkle
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Pear
Flattering & Finger-Lengthening
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Radiant
Bold Sparkle
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More shapes 3
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Trusted by 50+ leading retailers James Allen, Blue Nile and more
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Based on real live inventory 500,000+ diamonds tracked in real time
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Updated multiple times per day Prices reflect today's market
How pricing works
What Affects Diamond Price?
Every diamond’s value comes down to four big levers — size and shape, color and clarity, cut and certification, and live market availability. These are the inputs the Diamond Price Calculator uses to estimate how much a diamond is worth today.
vs
vs
High impact
Color & Clarity
D–E and Flawless command real premiums, but to the naked eye F–G and VS1–VS2 usually look identical once mounted. Stepping down one bracket each typically saves 25–45% combined.
Medium impact
Cut & Certification
Cut quality is what makes a diamond actually sparkle — Excellent or Ideal is non-negotiable. A trusted lab report (GIA or AGS) commands a real premium over EGL or IGI grading because the grades are stricter and more consistent.
Live market
▲ 2.4%
2.1M live listings
50+ retailers
Market dependent
Live Market Availability
Supply, demand and the depth of current listings move prices day-to-day. When inventory for your spec tightens, prices climb; when it deepens, you have more negotiating room. That’s why every estimate here uses live diamond prices, not stale lists.
Carat & price
Diamond Carat Size and Price
Diamond price doesn’t scale linearly with carat — a 2 carat diamond costs roughly four times a 1 carat at the same quality, not twice. That’s because larger rough diamonds are exponentially rarer. The diamond price per carat climbs sharply at every major weight threshold.
0.50 ct
~ $1,400
Entry-point weight
1.00 ct
~ $5,500
Most popular weight
2.00 ct
~ $22,000
~4× the 1 ct price
Buyer tip - the just-shy carat trick.
Choose a diamond carat size just under a round number (0.90–0.95 instead of 1.00,
or 1.85–1.95 instead of 2.00) to save 10–15% for a stone that looks visually
identical face-up.
Color & price
Diamond Color Chart and Price Impact
The GIA diamond color chart runs from D (colorless) to Z (light yellow). For engagement-quality stones, the practical range is D–K. The visible difference between adjacent grades is small, but each grade jump moves price meaningfully.
Premium
D–E
Colorless
No visible color. The purest grade - and the rarest.
Highest price. Most of the difference disappears once the stone is mounted.
Sweet spot
F–G
Near-colorless
Looks completely colorless face-up to the naked eye.
Best value for most buyers - typically saves 25–35% vs D–E.
Smart save
H–I
Faint warmth
A very slight warmth, mostly invisible in yellow- or rose-gold settings.
Strong value - usually 40–55% less than D–E at the same clarity.
Budget
J–K
Warm tint
A visible warm tint, best paired with warmer metals.
Lowest price tier - useful for prioritising carat size over color.
Most buyers land on F–G for the best balance of appearance and price. Want the full table? See the live Diamond Price Index.
Clarity & price
Diamond Clarity Chart and Price Impact
The diamond clarity chart grades how free a stone is from inclusions and blemishes. For most buyers the visible difference disappears well before the price difference does — so clarity is the single easiest place to save.
Premium
FL–IF
Flawless
No inclusions or blemishes at 10× magnification.
Significant premium - rarely worth the cost for a mounted stone.
Optional
VVS1–VVS2
Very Very Slight
Inclusions extremely difficult to see even at 10× magnification.
Usually overkill - pays for grades the eye can't see.
Sweet spot
VS1–VS2
Very Slight
Inclusions visible under magnification, eye-clean face-up.
The eye-clean sweet spot - best clarity value for most buyers.
Budget
SI1–SI2
Slightly Included
Inclusions sometimes visible to the naked eye - depends on the individual stone.
Lowest clarity tier - strong value when the inclusions are well-positioned.
VS1–VS2 is the clarity grade most buyers should target — eye-clean, well-priced, widely available. Browse current 1-carat round prices to see the spread in action.
How we calculate
How We Calculate Fair Market Price
Every Fair Market Price on this Diamond Value Calculator is built from live diamond prices - not opinions, not wholesale benchmarks, not stale lists. Here’s exactly what goes into your estimate.
500K+
Diamonds analyzed
Every estimate is grounded in over two million live diamond listings.
50+
Trusted retailers
Prices come from the major consumer-facing vendors people actually buy from.
Hourly
Updated continuously
Inventory and prices refresh every hour, so the estimate matches today’s market.
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Comparable diamonds
We match your exact shape, carat, color and clarity - not a generic average.
Once we have your matching set, the central price becomes your Fair Market Price, with a low/high range showing how the market currently varies. Quotes inside the range are normal; anything below the low end is a deal worth taking seriously. See the methodology in detail on our Diamond Pricing Research page.
FAQ
Diamond Price Calculator FAQ
How much is a diamond worth?
A diamond's worth depends on its carat, color, clarity, cut, and shape. A 1 carat round at G/VS2 natural sits around $4,500–$6,500; the same spec lab-grown is usually 60–80% less. The fastest way to find your stone's value is to enter its details into the Diamond Price Calculator above.
How is diamond value calculated?
We compare your selected diamond against the live retailer listings of the same shape, carat, color and clarity - drawn from the 500,000+ diamonds we track in real time. The central price across those listings becomes the Fair Market Price, with a low/high range showing how the market currently varies.
What is Fair Market Price?
Fair Market Price is the central price comparable diamonds are currently trading for across major retailers. It isn't an asking price — it's a live benchmark drawn from thousands of listings, so you can tell whether any individual quote is reasonable.
What affects diamond price the most?
Carat weight, by a wide margin. Doubling carat roughly quadruples the price at the same quality. After carat, color and clarity each move price about 25–40% per major grade jump, and cut quality controls how sparkly the stone actually looks.
Does color affect diamond price?
Yes. Dropping from D to G typically saves 25–35% at the same carat and clarity - and both grades look colorless face-up once mounted. See the Diamond color chart above for the full breakdown.
Does clarity affect diamond price?
Yes. Flawless commands a steep premium most buyers don't need; VS1–VS2 is the eye-clean sweet spot, and SI1–SI2 can offer strong value when the inclusions are well-positioned. See the Diamond clarity chart above.
Why are round diamonds more expensive?
Two reasons: round still represents more than half of all engagement ring sales, and cutting a round brilliant wastes more of the rough stone than any fancy shape. The result is a 10–30% premium per carat over ovals, cushions, emeralds and pears at equivalent quality.
Is this based on live diamond prices?
Yes. Every estimate is the median of live retailer listings for the same size and quality, tracked in real time - the same prices you'd be quoted shopping today. Wholesale figures like Rapaport are different and not available to consumers.
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Everything you need to know about diamonds before you buy a diamond jewelry and billing.
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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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