Heart|Lab Grown|IGI

2.78ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG825660142

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825660142

Diamond specifications and retailer prices

From £1,024 GBP

$1,372 USD

As of October 30, 2026

Save £4,685 GBP (82%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £5,709 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 2.78ct lab-grown heart diamond

This 2.78ct lab-grown heart sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825660142 or 825660142. Listed at 19 retailers as of October 30, 2026, with prices from £1,024 to £5,709, a £4,685 spread on the same certified stone. Brilliant Earth lists it at £5,709. 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

2.78

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.1°

Pavilion angle37.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG825660142

Dimensions9.70 × 8.55 × 5.63 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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG825660142

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: £5,709 GBP|Low: £1,024 GBP|High: £8,314 GBP|Avg: £3,322 GBP|-31.3%

Brilliant Earth

Retailer 2

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Retailer 4

Retailer 5

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Retailer 11

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Retailer 13

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Retailer 19

October 30, 2026

Retailer 6£1,024 GBP

Retailer 18£1,114 GBP

Retailer 15£1,188 GBP

Retailer 3£1,189 GBP

Retailer 13£1,317 GBP

Retailer 5£1,346 GBP

Retailer 2£1,676 GBP

Retailer 11£1,734 GBP

Retailer 8£1,877 GBP

Retailer 9£2,016 GBP

Retailer 16£2,226 GBP

Retailer 17£2,350 GBP

Retailer 12£3,065 GBP

Retailer 7£3,202 GBP

Retailer 14£3,822 GBP

Retailer 10£4,176 GBP

Retailer 19£4,176 GBP

Retailer 4£4,544 GBP

Brilliant Earth£5,709 GBP

33 data points across 19 retailers

19 retailers£1,024 GBP to £5,709 GBP

Cheapest Retailer

£1,024 GBP

$1,372 USD

Retailer 2

£1,114 GBP

$1,493 USD

View

Retailer 3

£1,188 GBP

$1,592 USD

View

Retailer 4

£1,189 GBP

$1,593 USD

View

Final sale: no returns

Retailer 5

£1,317 GBP

$1,765 USD

View

Retailer 6

£1,346 GBP

$1,804 USD

View

Retailer 7

£1,676 GBP

View

Retailer 8

£1,734 GBP

$2,324 USD

View

Price last confirmed 19 days ago

Retailer 9

£1,877 GBP

$2,515 USD

View

Retailer 10

£2,016 GBP

$2,701 USD

View

Retailer 11

£2,226 GBP

$2,983 USD

View

B+

Retailer 12

£2,350 GBP

$3,149 USD

View

B+

Retailer 13

£3,065 GBP

ZAR 66,342 ZAR

View

B+

Retailer 14

£3,202 GBP

$4,290 USD

View

B+

Retailer 15

£3,822 GBP

View

B+

Retailer 16

£4,176 GBP

SGD 7,561 SGD

View

B+

Retailer 17

£4,176 GBP

$5,596 USD

View

B+

Retailer 18

£4,544 GBP

$6,088 USD

View

Most Expensive

Brilliant Earth

21434147A · Oct 30

£5,709 GBP

$7,650 USD

View

18 more retailers have this diamond

Prices start from £1,024 GBPSave up to £4,685 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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