Heart|Lab Grown|IGI

4.01ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG844621798

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG844621798

Diamond specifications and retailer prices

From £5,028 GBP

$6,737 USD

As of October 26, 2026

Save £16,160 GBP (76%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £21,188 GBP at Taylor and Hart · As of October 26, 2026

View at Taylor and Hart

About this 4.01ct lab-grown heart diamond

This 4.01ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG844621798 or 844621798. Listed at 16 retailers as of October 26, 2026, with prices from £5,028 to £21,188, a £16,160 spread on the same certified stone. Taylor and Hart lists it at £21,188. 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

4.01

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.8°

Pavilion angle41.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG844621798

Dimensions11.22 × 9.86 × 6.25 mm

L/W Ratio1.14

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG844621798

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 26

Current: £5,248 GBP|Low: £4,863 GBP|High: £32,127 GBP|Avg: £11,824 GBP|-0.2%

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

Retailer 14

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Retailer 16

Taylor and Hart

October 27, 2026

Retailer 16£5,028 GBP

Retailer 1£5,248 GBP

Retailer 7£5,803 GBP

Retailer 12£5,804 GBP

Retailer 14£6,247 GBP

Retailer 8£7,145 GBP

Retailer 15£7,250 GBP

Retailer 11£7,841 GBP

Retailer 5£10,428 GBP

Retailer 9£12,350 GBP

Retailer 10£13,318 GBP

Retailer 4£14,234 GBP

Retailer 3£16,315 GBP

Retailer 6£16,419 GBP

Retailer 13£17,487 GBP

Taylor and Hart£21,188 GBP

Retailer 2£32,127 GBP

15 data points across 17 retailers

16 retailers£5,028 GBP to £21,188 GBP

Cheapest Retailer

£5,028 GBP

$6,737 USD

Retailer 2

£5,248 GBP

View

Retailer 3

£5,803 GBP

CA$10,800 CAD

View

Retailer 4

£5,804 GBP

$7,777 USD

View

B+

Retailer 5

£6,247 GBP

$8,370 USD

View

B+

Retailer 6

£7,145 GBP

$9,573 USD

View

Retailer 7

£7,841 GBP

View

Price last confirmed 9 days ago

B+

Retailer 8

£10,428 GBP

$13,972 USD

View

B+

Retailer 9

£12,350 GBP

View

Retailer 10

£13,318 GBP

ZAR 288,279 ZAR

View

Retailer 11

£14,234 GBP

$19,072 USD

View

Price last confirmed 9 days ago

Retailer 12

£16,315 GBP

$21,861 USD

View

Retailer 13

£16,419 GBP

$22,000 USD

View

Retailer 14

£17,487 GBP

$23,431 USD

View

Most Expensive

Taylor and Hart

9QUMMLG · Oct 26

£21,188 GBP

$28,389 USD

View

14 more retailers have this diamond

Prices start from £5,028 GBPSave up to £16,160 GBP

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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