Round|Lab Grown|IGI

5.21ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG818674895

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818674895

Diamond specifications and retailer prices

From €4,156 EUR

As of November 5, 2026

Save €13,095 EUR (76%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: €17,252 EUR at Taylor and Hart · As of November 4, 2026

View at Taylor and Hart

About this 5.21ct lab-grown round diamond

This 5.21ct lab-grown round sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818674895 or 818674895. Listed at 19 retailers as of November 4, 2026, with prices from €4,156 to €17,252, a €13,095 spread on the same certified stone. Taylor and Hart lists it at €17,252. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.21

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle32.7°

Pavilion angle40.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818674895

Dimensions11.28 × 11.36 × 6.78 mm

L/W Ratio1.01

Girdle conditionFaceted

Cert comments

HEARTS & ARROWS As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG818674895

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5

Current: €6,143 EUR|Low: €4,635 EUR|High: €23,174 EUR|Avg: €9,281 EUR|-26.1%

Retailer 1

Retailer 2

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Retailer 15

Taylor and Hart

November 6, 2026

Retailer 3€4,655 EUR

Retailer 14€4,851 EUR

Retailer 12€5,383 EUR

Retailer 6€5,960 EUR

Retailer 1€6,143 EUR

Retailer 13€6,994 EUR

Retailer 15€7,043 EUR

Retailer 7€7,150 EUR

Retailer 9€7,743 EUR

Retailer 2€7,798 EUR

Retailer 4€9,043 EUR

Retailer 10€9,825 EUR

Retailer 8€9,955 EUR

Retailer 11€9,988 EUR

Retailer 5€13,401 EUR

Taylor and Hart€17,252 EUR

34 data points across 16 retailers

19 retailers€4,156 EUR to €17,252 EUR

Cheapest Retailer

€4,156 EUR

Retailer 2

€4,655 EUR

View

Final sale: no returns

Retailer 3

€4,851 EUR

View

Retailer 4

€5,383 EUR

View

Retailer 5

€5,960 EUR

View

Price last confirmed 30 days ago

Retailer 6

€5,960 EUR

View

Price last confirmed 16 days ago

Retailer 7

€5,960 EUR

View

Price last confirmed 21 days ago

Retailer 8

€6,143 EUR

View

Retailer 9

€6,994 EUR

View

Retailer 10

€7,043 EUR

View

Retailer 11

€7,150 EUR

View

Price last confirmed 48 days ago

Retailer 12

€7,743 EUR

View

Retailer 13

€7,798 EUR

View

Retailer 14

€9,043 EUR

View

Retailer 15

€9,825 EUR

View

Retailer 16

€9,955 EUR

View

Retailer 17

€9,988 EUR

View

Retailer 18

€13,401 EUR

View

Most Expensive

B+

Taylor and Hart

FOM5YL9 · Nov 4

€17,252 EUR

$19,363 USD

View

18 more retailers have this diamond

Prices start from €4,156 EURSave up to €13,095 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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5.21ct Round

€4,156 EUR