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 $7,675 USD

As of November 1, 2026

Save $22,923 USD (75%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: $30,598 USD 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 31, 2026, with prices from $7,675 to $30,598, a $22,923 spread on the same certified stone. Taylor and Hart lists it at $30,598. 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

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

Price History

Last verified: Nov 1

Current: $11,386 USD|Low: $7,675 USD|High: $36,510 USD|Avg: $17,281 USD|+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$7,675 USD

Retailer 3$8,789 USD

Retailer 2$9,922 USD

Retailer 13$10,381 USD

Retailer 1$11,386 USD

Retailer 11$15,723 USD

Retailer 6$15,851 USD

Retailer 5$16,463 USD

Retailer 9$17,709 USD

Retailer 8$19,278 USD

Retailer 7$22,940 USD

Retailer 4$26,062 USD

Retailer 10$28,647 USD

Taylor and Hart$30,598 USD

42 data points across 14 retailers

14 retailers$7,675 USD to $30,598 USD

Cheapest Retailer

$7,675 USD

Retailer 2

$8,789 USD

View

Retailer 3

$9,099 USD

View

Price last confirmed 76 days ago

Retailer 4

$9,922 USD

View

Retailer 5

$10,381 USD

HK$81,100 HKD

View

Retailer 6

$11,386 USD

£8,965 GBP

View

Retailer 7

$15,723 USD

View

Retailer 8

$15,851 USD

€15,096 EUR

View

B+

Retailer 9

$17,709 USD

£13,944 GBP

View

B+

Retailer 10

$19,278 USD

ZAR 311,441 ZAR

View

B+

Retailer 11

$22,940 USD

View

B+

Retailer 12

$26,062 USD

View

Retailer 13

$28,647 USD

View

Most Expensive

Taylor and Hart

BCB6Q9W · Oct 31

$30,598 USD

View

13 more retailers have this diamond

Prices start from $7,675 USDSave up to $22,923 USD

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

$7,675 USD