Round|Lab Grown|IGI

5.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG768629057

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768629057

Diamond specifications and retailer prices

From €6,870 EUR

$7,675 USD

As of October 30, 2026

Save €20,518 EUR (75%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: €27,388 EUR at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 5.51ct lab-grown round diamond

This 5.51ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768629057 or 768629057. Listed at 14 retailers as of October 30, 2026, with prices from €6,870 to €27,388, a €20,518 spread on the same certified stone. Taylor and Hart lists it at €27,388. 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

5.51

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.5°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG768629057

Dimensions11.36 × 11.42 × 6.95 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

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 LG768629057

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 30

Current: €10,192 EUR|Low: €6,870 EUR|High: €32,680 EUR|Avg: €15,468 EUR|+0.4%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Taylor and Hart

November 1, 2026

Retailer 12€6,870 EUR

Retailer 3€7,867 EUR

Retailer 2€8,881 EUR

Retailer 13€9,292 EUR

Retailer 1€10,192 EUR

Retailer 11€14,074 EUR

Retailer 6€14,188 EUR

Retailer 5€14,736 EUR

Retailer 9€15,851 EUR

Retailer 8€17,256 EUR

Retailer 7€20,533 EUR

Retailer 4€23,328 EUR

Retailer 10€25,642 EUR

Taylor and Hart€27,388 EUR

42 data points across 14 retailers

14 retailers€6,870 EUR to €27,388 EUR

Cheapest Retailer

€6,870 EUR

$7,675 USD

Retailer 2

€7,867 EUR

$8,789 USD

View

Retailer 3

€8,144 EUR

$9,099 USD

View

Price last confirmed 76 days ago

Retailer 4

€8,881 EUR

$9,922 USD

View

Retailer 5

€9,292 EUR

HK$81,100 HKD

View

Retailer 6

€10,192 EUR

£8,965 GBP

View

Retailer 7

€14,074 EUR

$15,723 USD

View

Retailer 8

€14,188 EUR

View

B+

Retailer 9

€15,851 EUR

£13,944 GBP

View

B+

Retailer 10

€17,256 EUR

ZAR 311,441 ZAR

View

B+

Retailer 11

€20,533 EUR

$22,940 USD

View

B+

Retailer 12

€23,328 EUR

$26,062 USD

View

Retailer 13

€25,642 EUR

$28,647 USD

View

Most Expensive

Taylor and Hart

BCB6Q9W · Oct 31

€27,388 EUR

$30,598 USD

View

13 more retailers have this diamond

Prices start from €6,870 EURSave up to €20,518 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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5.51ct Round

€6,870 EUR