Marquise|Lab Grown|IGI

1.09ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG845607037

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845607037

Diamond specifications and retailer prices

From £171 GBP

$230 USD

As of November 2, 2026

Save £1,170 GBP (87%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £1,341 GBP at Brilliant Earth · As of November 2, 2026

View at Brilliant Earth

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG845607037 or 845607037. Listed at 17 retailers as of November 2, 2026, with prices from £171 to £1,341, a £1,170 spread on the same certified stone. Brilliant Earth lists it at £1,341. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.1°

Pavilion angle39.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG845607037

Dimensions11.30 × 5.19 × 3.22 mm

L/W Ratio2.18

Girdle conditionFaceted

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 LG845607037

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 2

Current: £684 GBP|Low: £171 GBP|High: £957 GBP|Avg: £508 GBP|-1.8%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

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Retailer 16

November 2, 2026

Retailer 10£171 GBP

Retailer 8£193 GBP

Retailer 13£198 GBP

Retailer 3£214 GBP

Retailer 9£224 GBP

Retailer 16£289 GBP

Retailer 14£369 GBP

Retailer 12£400 GBP

Retailer 2£445 GBP

Retailer 6£484 GBP

Retailer 1£684 GBP

Retailer 4£687 GBP

Retailer 7£726 GBP

Retailer 5£740 GBP

Retailer 15£856 GBP

Retailer 11£935 GBP

6 data points across 16 retailers

17 retailers£171 GBP to £1,341 GBP

Cheapest Retailer

£171 GBP

$230 USD

Retailer 2

£193 GBP

$259 USD

View

Final sale: no returns

Retailer 3

£198 GBP

$266 USD

View

Retailer 4

£214 GBP

$287 USD

View

Retailer 5

£224 GBP

View

Retailer 6

£289 GBP

$388 USD

View

Retailer 7

£369 GBP

ZAR 7,998 ZAR

View

Retailer 8

£400 GBP

View

Retailer 9

£445 GBP

$597 USD

View

Retailer 10

£484 GBP

$650 USD

View

B+

Retailer 11

£684 GBP

$918 USD

View

B+

Retailer 12

£687 GBP

$922 USD

View

B+

Retailer 13

£726 GBP

$974 USD

View

B+

Retailer 14

£740 GBP

$993 USD

View

B+

Retailer 15

£856 GBP

View

B+

Retailer 16

£935 GBP

SGD 1,696 SGD

View

Most Expensive

Brilliant Earth

22400591A · Nov 2

£1,341 GBP

$1,800 USD

View

16 more retailers have this diamond

Prices start from £171 GBPSave up to £1,170 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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