Round|Lab Grown|IGI

8.66ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG719515588

Shape and cutting style on the report: Round brilliant

Certificate IGI LG719515588

Diamond specifications and retailer prices

From £1,343 GBP

$1,802 USD

As of November 1, 2026

Save £7,890 GBP (85%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £12,400 GBP at Brilliant Earth · As of November 1, 2026

View at Brilliant Earth

About this 8.66ct lab-grown round diamond

This 8.66ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG719515588 or 719515588. Listed at 15 retailers as of November 1, 2026, with a 588% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

8.66

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.4°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG719515588

Dimensions13.22 × 13.29 × 8.10 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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG719515588

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: Nov 1

Current: £12,400 GBP|Low: £1,288 GBP|High: £12,728 GBP|Avg: £3,831 GBP|-2.6%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

November 2, 2026

Retailer 6£1,343 GBP

Retailer 10£1,503 GBP

Retailer 7£1,557 GBP

Retailer 5£1,684 GBP

Retailer 9£1,917 GBP

Retailer 2£2,336 GBP

Retailer 4£2,883 GBP

Retailer 8£3,623 GBP

Retailer 3£8,712 GBP

Brilliant Earth£12,400 GBP

46 data points across 10 retailers

15 retailers£1,343 GBP to £9,233 GBP

Cheapest Retailer

£1,343 GBP

$1,802 USD

Retailer 2

£1,461 GBP

$1,960 USD

View

Retailer 3

£1,503 GBP

$2,017 USD

View

Final sale: no returns

Retailer 4

£1,557 GBP

$2,090 USD

View

Retailer 5

£1,557 GBP

$2,090 USD

View

Price last confirmed 20 days ago

Retailer 6

£1,684 GBP

$2,260 USD

View

B+

Retailer 7

£1,917 GBP

$2,573 USD

View

B+

Retailer 8

£2,336 GBP

View

B+

Retailer 9

£2,363 GBP

$3,171 USD

View

B+

Retailer 10

£2,883 GBP

ZAR 62,496 ZAR

View

B+

Retailer 11

£2,958 GBP

$3,969 USD

View

Retailer 12

£3,623 GBP

$4,862 USD

View

Retailer 13

£4,359 GBP

$5,849 USD

View

Retailer 14

£9,233 GBP

$12,390 USD

View

Most Expensive

Brilliant Earth

16810098A · Nov 1

£12,400 GBP

$16,640 USD

View

Price under review

14 more retailers have this diamond

Prices start from £1,343 GBPSave up to £7,890 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.

Similar diamonds

8.66ct Round

£1,343 GBP