Cushion|Lab Grown|IGI

5.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780663139

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780663139

Diamond specifications and retailer prices

From $7,408 USD

As of October 30, 2026

Save $22,520 USD (75%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: $29,928 USD at Taylor and Hart · As of October 30, 2026

View at Taylor and Hart

About this 5.09ct lab-grown cushion diamond

This 5.09ct lab-grown cushion 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 LG780663139 or 780663139. Listed at 14 retailers as of October 30, 2026, with prices from $7,408 to $29,928, a $22,520 spread on the same certified stone. Taylor and Hart lists it at $29,928. 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

5.09

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.7°

Pavilion angle35.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG780663139

Dimensions11.34 × 9.29 × 6.08 mm

L/W Ratio1.22

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 LG780663139

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: Oct 30

Current: $7,408 USD|Low: $7,408 USD|High: $30,683 USD|Avg: $16,416 USD|-16.7%

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

October 30, 2026

Retailer 1$7,408 USD

Retailer 5$7,670 USD

Retailer 3$9,813 USD

Retailer 10$10,035 USD

Retailer 2$10,355 USD

Retailer 8$11,299 USD

Retailer 6$15,180 USD

Retailer 11$15,433 USD

Retailer 12$17,455 USD

Retailer 7$17,940 USD

Retailer 9$18,612 USD

Retailer 13$23,285 USD

Retailer 4$25,755 USD

Taylor and Hart$29,928 USD

39 data points across 14 retailers

14 retailers$7,408 USD to $29,928 USD

Cheapest Retailer

$7,408 USD

Retailer 2

$7,670 USD

View

Retailer 3

$9,813 USD

View

Retailer 4

$10,035 USD

HK$78,400 HKD

View

Retailer 5

$10,355 USD

View

Price last confirmed 12 days ago

Retailer 6

$11,299 USD

£8,897 GBP

View

Retailer 7

$15,180 USD

View

Retailer 8

$15,433 USD

€14,698 EUR

View

B+

Retailer 9

$17,455 USD

£13,744 GBP

View

B+

Retailer 10

$17,940 USD

View

B+

Retailer 11

$18,612 USD

ZAR 300,677 ZAR

View

B+

Retailer 12

$23,285 USD

View

Retailer 13

$25,755 USD

View

Most Expensive

Taylor and Hart

R7TL40U · Oct 30

$29,928 USD

View

13 more retailers have this diamond

Prices start from $7,408 USDSave up to $22,520 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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5.09ct Cushion

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