Oval|Lab Grown|IGI

6.65ct G VS2 Oval Lab Grown Diamond

ID • G/VS2 • IGI LG627455431

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG627455431

Diamond specifications and retailer prices

From £643 GBP

$861 USD

As of October 29, 2026

Save £3,194 GBP (83%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £3,836 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 6.65ct lab-grown oval diamond

This 6.65ct lab-grown oval sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG627455431 or 627455431. Listed at 17 retailers as of October 29, 2026, with prices from £643 to £3,836, a £3,194 spread on the same certified stone. Brilliant Earth lists it at £3,836. 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

6.65

Carat

Colour

VS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.1°

Pavilion angle40.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG627455431

Dimensions15.04 × 10.75 × 6.66 mm

L/W Ratio1.40

Girdle conditionFaceted

Culet sizePointed

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG627455431

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 29

Current: £3,836 GBP|Low: £617 GBP|High: £3,956 GBP|Avg: £1,545 GBP|-3.0%

Brilliant Earth

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

October 30, 2026

Retailer 4£643 GBP

Retailer 12£699 GBP

Retailer 14£746 GBP

Retailer 16£746 GBP

Retailer 15£816 GBP

Retailer 7£1,127 GBP

Retailer 2£1,146 GBP

Retailer 5£1,199 GBP

Retailer 9£1,202 GBP

Retailer 11£1,301 GBP

Retailer 13£1,714 GBP

Retailer 8£1,952 GBP

Retailer 3£2,096 GBP

Retailer 6£2,332 GBP

Retailer 10£2,798 GBP

Brilliant Earth£3,836 GBP

38 data points across 16 retailers

17 retailers£643 GBP to £3,836 GBP

Cheapest Retailer

£643 GBP

$861 USD

Retailer 2

£699 GBP

$937 USD

View

Retailer 3

£746 GBP

$999 USD

View

Price last confirmed 13 days ago

Retailer 4

£746 GBP

$999 USD

View

Retailer 5

£816 GBP

View

Price last confirmed 13 days ago

Retailer 6

£1,127 GBP

$1,510 USD

View

Retailer 7

£1,146 GBP

View

B+

Retailer 8

£1,199 GBP

$1,606 USD

View

B+

Retailer 9

£1,202 GBP

$1,610 USD

View

Retailer 10

£1,301 GBP

€1,660 EUR

View

Price last confirmed 7 days ago

B+

Retailer 11

£1,714 GBP

$2,296 USD

View

B+

Retailer 12

£1,952 GBP

$2,615 USD

View

B+

Retailer 13

£2,096 GBP

$2,808 USD

View

B+

Retailer 14

£2,332 GBP

$3,125 USD

View

Retailer 15

£2,586 GBP

$3,465 USD

View

Price last confirmed 12 days ago

Retailer 16

£2,798 GBP

View

Most Expensive

Brilliant Earth

9814178A · Oct 29

£3,836 GBP

$5,140 USD

View

16 more retailers have this diamond

Prices start from £643 GBPSave up to £3,194 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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6.65ct Oval

£643 GBP