Round|Lab Grown|IGI

2.78ct G VS2 Round Lab Grown Diamond

EX • G/VS2 • IGI LG781627581

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781627581

Diamond specifications and retailer prices

From £243 GBP

$326 USD

As of October 26, 2026

Save £1,488 GBP (86%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £1,731 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 2.78ct lab-grown round diamond

This 2.78ct lab-grown round sits in the two to three carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG781627581 or 781627581. Listed at 19 retailers as of October 26, 2026, with prices from £243 to £1,731, a £1,488 spread on the same certified stone. Brilliant Earth lists it at £1,731. 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

VS2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle31.9°

Pavilion angle41.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG781627581

Dimensions9.14 × 9.21 × 5.44 mm

L/W Ratio1.01

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG781627581

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: £1,731 GBP|Low: £234 GBP|High: £1,731 GBP|Avg: £721 GBP

Brilliant Earth

Retailer 2

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October 30, 2026

Retailer 19£243 GBP

Retailer 8£272 GBP

Retailer 17£282 GBP

Retailer 18£302 GBP

Retailer 4£439 GBP

Retailer 14£455 GBP

Retailer 13£465 GBP

Retailer 6£489 GBP

Retailer 11£531 GBP

Retailer 15£535 GBP

Retailer 9£729 GBP

Retailer 5£751 GBP

Retailer 2£963 GBP

Retailer 3£969 GBP

Retailer 7£1,140 GBP

Retailer 16£1,210 GBP

Retailer 12£1,276 GBP

Retailer 10£1,377 GBP

Brilliant Earth£1,731 GBP

41 data points across 19 retailers

19 retailers£243 GBP to £1,731 GBP

Cheapest Retailer

£243 GBP

$326 USD

Retailer 2

£282 GBP

$378 USD

View

Retailer 3

£302 GBP

$404 USD

View

Retailer 4

£334 GBP

HK$3,500 HKD

View

Retailer 5

£439 GBP

View

Price last confirmed 14 days ago

Retailer 6

£455 GBP

$610 USD

View

Retailer 7

£465 GBP

€593 EUR

View

B+

Retailer 8

£489 GBP

$655 USD

View

Retailer 9

£531 GBP

$712 USD

View

Retailer 10

£535 GBP

View

B+

Retailer 11

£729 GBP

$977 USD

View

B+

Retailer 12

£751 GBP

$1,006 USD

View

B+

Retailer 13

£963 GBP

SGD 1,744 SGD

View

B+

Retailer 14

£969 GBP

$1,299 USD

View

Retailer 15

£1,140 GBP

$1,527 USD

View

B+

Retailer 16

£1,210 GBP

View

Retailer 17

£1,276 GBP

$1,710 USD

View

Retailer 18

£1,377 GBP

$1,845 USD

View

Price last confirmed 16 days ago

Most Expensive

Brilliant Earth

17981216A · Oct 29

£1,731 GBP

$2,320 USD

View

18 more retailers have this diamond

Prices start from £243 GBPSave up to £1,488 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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2.78ct Round

£243 GBP