CaratHunter

Same diamond. Different prices. We help you find the best deal.

Compare prices across 100+ diamond retailers worldwide

Ask LucyVisual SearchDiamond ExplorerDiamond EducationInsightsCert DecoderBest by Budget

See it in action

The same certified diamond can vary by thousands across different retailers. Here are some real live examples.

1.29ct Princess G IF EX
GIA Certified · Natural
DreamStone$2,421
Blue Nile$2,747
Diamond Exchange Canada$3,075
Save $654 (27%)vs most expensive
View Full Comparison→
1.42ct Princess E VVS2 ID
GIA Certified · Lab Grown
Kay Jewelers$1,620
Zales$1,620
Jared$2,350
Save $730 (45.1%)vs most expensive
View Full Comparison→

Pass holders see all retailer names and exact prices

How It Works

Four steps to finding your diamond for less.

1
Search your way

Paste a retailer URL, type what you want in plain English, explore with filters, use visual search, or ask Lucy our AI diamond expert.

2
Compare across retailers

We match the same certified diamond across 100+ retailers worldwide so you can compare your options side by side.

3
Diamonds scored by Caratlytics

Every listing gets a score from 0 to 100 based on quality, value, certification, and market data. Want the finest stone your budget allows? Switch to Quality First mode. Want the best overall deal? The default Balanced mode has you covered.

4
Choose with confidence

Compare prices, scores, and retailer options in one place. Average savings of $1,129 on a 1ct diamond when you shop around.

Meet Lucy

Your AI diamond expert. Search, compare, and find the best deal in conversation.

Lucy
Carat Hunter AI
Example conversation. Free users get diamond education. Pass holders get personalised search and deal-finding.
Independent

Unbiased results powered by data, not commissions. Each retailer we track is scored the same way.

Global Coverage

109+ retailers across 25+ countries. One search covers them all.

Updated Daily

Prices refreshed every day. Never miss a price drop.

23.2M+
Diamonds tracked
4.5M+
Cross retailer matches
105+
Retailers monitored
25+
Countries covered
Want full access? See our plans→

Latest from Lucy

Weekly diamond market analysis, deal spotlights, and pillar guides from our resident analyst.

Deal Spotlight

Natural Diamonds Are Sliding and Lab-Grown Rounds Still Have a Retailer Problem

Natural diamonds are down 6.8% in seven days across 11.7 million listings, while lab-grown rounds carry a 48% cross-retailer price spread that costs buyers thousands. Four natural round E colour stones at 4.10 carats are sitting 80 to 83% below their category median. A few of them might be genuinely worth it.

5 min read
Weekly Brief

Natural diamonds had a rough week. Lab-grown fancy blues didn't.

Natural diamond prices fell 7.1% on average this week, with large fancy shapes down as much as 64.7% in median price. Lab-grown moved in the opposite direction, up 2.4%, and five lab-grown fancy vivid blue pear shapes in the 2ct range flagged as exceptional value at 33% below the market median. The spread between the two markets continues to widen.

6 min read
Cluster

Diamond Depth and Table Percentages, the Numbers Behind the Sparkle

A GIA Excellent grade tells you a stone made the cut. Depth percentage and table percentage tell you how well. These two numbers, often ignored, determine face up size, optical performance, and whether you're paying for carat weight you'll never see.

6 min read
Deep Dive

Lab-Grown Pears Are Defying Gravity Right Now

Lab-grown pear diamonds in the 1.00 to 1.24 carat range have surged 51% in seven days, going against a broader market that has shed nearly 12% over the past month. With 117 active listings and a median price of $1,316.83 per carat, the category is worth understanding before you commit to a purchase.

6 min read
Deal Spotlight

Natural Diamond Prices Dropped 8% in Seven Days. Where the Value Sits Now.

Natural diamonds lost 7.8% of their value in seven days, with large ovals dropping nearly 80% at the median and natural marquise cuts off more than 55% over the week. Cross-retailer spreads on natural emerald cuts hit 61.3%, meaning two retailers can charge more than $4,000 above each other for an equivalent stone. The specific shapes, spreads, and listings worth your attention right now.

6 min read
Weekly Brief

Natural Diamonds Fell 6.8% Last Week. Lab-Grown Did the Opposite.

Natural diamonds averaged a 6.8% weekly decline this week while lab-grown gained 3.8%. Three natural radiant H stones at 1.50 carats are currently priced 72 to 75% below their category median. And the cross-retailer spread on lab-grown rounds hit 55%.

5 min read
All Lucy's posts→

Explore the guides

Hand-built guides that cover the questions every diamond shopper actually asks.

The 4Cs Explained

Cut, colour, clarity, carat. What actually matters and where to spend your budget.

Diamond Shapes

Round, oval, cushion, princess and seven more. How shape changes price per carat.

Lab vs Natural

The 86.8% spread, why it exists, and which option fits your budget.

Estimate a Diamond

Live market price for any 4C combination across 100+ retailers.

Top Value Picks

Our highest-scoring stones for raw value, refreshed every hour.

Diamonds Under $50K

What a $50,000 budget really gets you in the current market.

Diamond market analysis

Editorial analysis grounded in our index of certified diamonds across more than 100 retailers

Diamond Insights Blog

Weekly market analysis and deal spotlights from Lucy.

Cert Decoder

Find a hidden certificate number from the specs you can see.

Best by Budget

Three curated picks at three price tiers within your budget, ranked by the Caratlytics score.

Decode any diamond certificate

Find a redacted or hidden cert number from the diamond's specs. Free, no sign-up.

GIA DecoderIGI DecoderHRD DecoderAGS DecoderGCAL DecoderAll Labs

Find every retailer for any spec

Thousands of live pages covering each shape, carat, colour and clarity combination. Plus side-by-side comparisons of every major retailer pair.

Where to Buy by Spec

For every popular spec combination, every retailer currently stocking it. Ranked by inventory count, updated daily.

Compare Retailers

Side-by-side comparisons of every major retailer pair with non-zero overlap. Facts only, no per-retailer pricing claims.

Carat Hunter Analysis

Editorial analysis, real data

Original analysis backed by our index of 23 million certified diamonds tracked across 105+ retailers worldwide. AI-assisted, methodology disclosed.

Latest analysis

Editorial analysis from the Carat Hunter index

Cohort-level diamond market analysis backed by our index of certified listings.

Read the analysis→
All analysis

Browse the analysis index

Cohort analyses on cross-retailer pricing, certification grading, lab-grown vs natural spreads, and more. AI-assisted, editor-reviewed, refresh dates on every piece.

Browse all→

Take Carat Hunter with you

The full diamond search, Lucy and instant hunt alerts on your phone, free for iPhone and Android.

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Popular searches

Round 1ct NaturalOval 1.5ct Lab GrownEmerald 2ct NaturalCushion 1ct Lab GrownPear 2ct Natural