Heart|Lab Grown|IGI

3.94ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG804655042

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804655042

Diamond specifications and retailer prices

From £3,169 GBP

$4,246 USD

As of October 30, 2026

Save £10,929 GBP (78%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £14,098 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 3.94ct lab-grown heart diamond

This 3.94ct 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 LG804655042 or 804655042. Listed at 22 retailers as of October 30, 2026, with prices from £3,169 to £14,098, a £10,929 spread on the same certified stone. Brilliant Earth lists it at £14,098. 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

3.94

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.8°

Pavilion angle39.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG804655042

Dimensions9.85 × 11.11 × 6.32 mm

L/W Ratio1.13

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 LG804655042

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: £14,098 GBP|Low: £3,043 GBP|High: £15,458 GBP|Avg: £6,934 GBP|-3.0%

Brilliant Earth

Retailer 2

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October 31, 2026

Retailer 4£3,169 GBP

Retailer 9£3,321 GBP

Retailer 10£3,470 GBP

Retailer 11£3,550 GBP

Retailer 5£3,676 GBP

Retailer 7£3,676 GBP

Retailer 3£3,713 GBP

Retailer 16£4,127 GBP

Retailer 8£4,128 GBP

Retailer 21£4,238 GBP

Retailer 6£4,594 GBP

Retailer 18£4,759 GBP

Retailer 20£5,441 GBP

Retailer 19£7,653 GBP

Retailer 15£8,440 GBP

Retailer 17£8,535 GBP

Retailer 12£10,712 GBP

Retailer 13£11,941 GBP

Retailer 2£13,082 GBP

Retailer 14£13,089 GBP

Brilliant Earth£14,098 GBP

40 data points across 21 retailers

22 retailers£3,169 GBP to £14,098 GBP

Cheapest Retailer

£3,169 GBP

$4,246 USD

Retailer 2

£3,321 GBP

$4,450 USD

View

Retailer 3

£3,470 GBP

$4,650 USD

View

Retailer 4

£3,550 GBP

$4,756 USD

View

Final sale: no returns

Retailer 5

£3,676 GBP

$4,926 USD

View

Price last confirmed 14 days ago

Retailer 6

£3,676 GBP

$4,926 USD

View

Retailer 7

£3,713 GBP

$4,975 USD

View

B+

Retailer 8

£4,127 GBP

HK$43,200 HKD

View

B+

Retailer 9

£4,128 GBP

$5,531 USD

View

B+

Retailer 10

£4,238 GBP

$5,678 USD

View

B+

Retailer 11

£4,594 GBP

$6,155 USD

View

B+

Retailer 12

£4,759 GBP

View

B+

Retailer 13

£5,441 GBP

$7,290 USD

View

B+

Retailer 14

£6,569 GBP

$8,802 USD

View

B+

Retailer 15

£7,653 GBP

View

B+

Retailer 16

£8,440 GBP

$11,309 USD

View

B+

Retailer 17

£8,535 GBP

ZAR 184,757 ZAR

View

Retailer 18

£10,712 GBP

$14,353 USD

View

Retailer 19

£11,941 GBP

SGD 21,622 SGD

View

Retailer 20

£13,082 GBP

$17,528 USD

View

Retailer 21

£13,089 GBP

$17,538 USD

View

Most Expensive

Brilliant Earth

20381023A · Oct 30

£14,098 GBP

$18,890 USD

View

21 more retailers have this diamond

Prices start from £3,169 GBPSave up to £10,929 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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3.94ct Heart

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