Heart|Lab Grown|IGI

3.78ct E VVS2 Heart Lab Grown Diamond

ID • E/VVS2 • IGI LG770665521

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG770665521

Diamond specifications and retailer prices

From £451 GBP

$600 USD

As of October 27, 2026

Save £5,835 GBP (93%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £6,285 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 3.78ct lab-grown heart diamond

This 3.78ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG770665521 or 770665521. Listed at 22 retailers as of October 27, 2026, with prices from £451 to £6,285, a £5,835 spread on the same certified stone. Brilliant Earth lists it at £6,285. 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

3.78

Carat

Colour

VVS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle42.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG770665521

Dimensions9.73 × 10.66 × 6.41 mm

L/W Ratio1.10

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG770665521

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 27

Current: £6,285 GBP|Low: £445 GBP|High: £6,488 GBP|Avg: £1,500 GBP|-3.1%

Brilliant Earth

Retailer 2

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Retailer 19

October 30, 2026

Retailer 7£451 GBP

Retailer 14£526 GBP

Retailer 13£559 GBP

Retailer 11£574 GBP

Retailer 10£665 GBP

Retailer 3£740 GBP

Retailer 17£785 GBP

Retailer 2£875 GBP

Retailer 15£964 GBP

Retailer 18£1,214 GBP

Retailer 8£1,221 GBP

Retailer 9£1,249 GBP

Retailer 4£1,446 GBP

Retailer 19£1,470 GBP

Retailer 5£1,784 GBP

Retailer 6£1,808 GBP

Retailer 12£1,826 GBP

Retailer 16£2,440 GBP

Brilliant Earth£6,285 GBP

33 data points across 19 retailers

22 retailers£451 GBP to £6,285 GBP

Cheapest Retailer

£451 GBP

$600 USD

Retailer 2

£526 GBP

$700 USD

View

Final sale: no returns

Retailer 3

£559 GBP

$744 USD

View

Retailer 4

£567 GBP

$755 USD

View

Price last confirmed 35 days ago

Retailer 5

£574 GBP

$765 USD

View

Price last confirmed 13 days ago

Retailer 6

£665 GBP

$885 USD

View

B+

Retailer 7

£740 GBP

$985 USD

View

Retailer 8

£785 GBP

$1,045 USD

View

Retailer 9

£875 GBP

View

Retailer 10

£964 GBP

€1,223 EUR

View

Retailer 11

£1,214 GBP

ZAR 26,117 ZAR

View

Retailer 12

£1,221 GBP

A$2,501 AUD

View

Price last confirmed 9 days ago

Retailer 13

£1,249 GBP

$1,663 USD

View

B+

Retailer 14

£1,446 GBP

$1,925 USD

View

B+

Retailer 15

£1,470 GBP

$1,958 USD

View

B+

Retailer 16

£1,675 GBP

$2,230 USD

View

Retailer 17

£1,696 GBP

A$3,475 AUD

View

Price last confirmed 154 days ago

B+

Retailer 18

£1,784 GBP

$2,376 USD

View

B+

Retailer 19

£1,808 GBP

$2,407 USD

View

B+

Retailer 20

£1,826 GBP

$2,432 USD

View

B+

Retailer 21

£2,440 GBP

View

Most Expensive

Brilliant Earth

17548752A · Oct 29

£6,285 GBP

$8,370 USD

View

21 more retailers have this diamond

Prices start from £451 GBPSave up to £5,835 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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3.78ct Heart

£451 GBP