Marquise|Lab Grown|IGI

2.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG818684305

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818684305

Diamond specifications and retailer prices

From €2,470 EUR

$2,760 USD

As of October 31, 2026

Save €7,018 EUR (74%) vs most expensive(unlock to see where)

13 retailers carry this diamond

Most expensive: €9,489 EUR at With Clarity · As of October 31, 2026

View at With Clarity

About this 2.51ct lab-grown marquise diamond

This 2.51ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818684305 or 818684305. Listed at 13 retailers as of October 31, 2026, with prices from €2,470 to €9,489, a €7,018 spread on the same certified stone. With Clarity lists it at €9,489. 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

2.51

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.1°

Pavilion angle39.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818684305

Dimensions13.93 × 7.11 × 4.47 mm

L/W Ratio1.96

Girdle conditionFaceted

Cert comments

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG818684305

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

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

Price History

Last verified: Oct 31

Current: €3,343 EUR|Low: €2,737 EUR|High: €9,489 EUR|Avg: €5,440 EUR|-2.5%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

With Clarity

November 1, 2026

Retailer 10€2,737 EUR

Retailer 11€2,990 EUR

Retailer 1€3,343 EUR

Retailer 8€3,697 EUR

Retailer 6€3,904 EUR

Retailer 7€4,108 EUR

Retailer 4€6,342 EUR

Retailer 3€6,425 EUR

Retailer 5€6,589 EUR

Retailer 9€7,179 EUR

Retailer 2€8,547 EUR

With Clarity€9,489 EUR

34 data points across 12 retailers

13 retailers€2,470 EUR to €9,489 EUR

Cheapest Retailer

€2,470 EUR

$2,760 USD

Retailer 2

€2,737 EUR

$3,058 USD

View

Retailer 3

€2,990 EUR

HK$26,100 HKD

View

Retailer 4

€3,343 EUR

£2,941 GBP

View

B+

Retailer 5

€3,697 EUR

$4,130 USD

View

B+

Retailer 6

€3,904 EUR

View

B+

Retailer 7

€4,108 EUR

$4,590 USD

View

Retailer 8

€6,342 EUR

A$10,901 AUD

View

Retailer 9

€6,425 EUR

$7,179 USD

View

Price last confirmed 8 days ago

B+

Retailer 10

€6,589 EUR

£5,796 GBP

View

Retailer 11

€7,179 EUR

$8,020 USD

View

Retailer 12

€8,547 EUR

$9,549 USD

View

Most Expensive

With Clarity

818684305 · Oct 31

€9,489 EUR

$10,601 USD

View

12 more retailers have this diamond

Prices start from €2,470 EURSave up to €7,018 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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2.51ct Marquise

€2,470 EUR