Marquise|Lab Grown|IGI

1.74ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG823695115

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823695115

Diamond specifications and retailer prices

From £686 GBP

$919 USD

As of October 30, 2026

Save £2,299 GBP (77%) vs most expensive(unlock to see where)

23 retailers carry this diamond

Most expensive: £2,985 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 1.74ct lab-grown marquise diamond

This 1.74ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG823695115 or 823695115. Listed at 23 retailers as of October 30, 2026, with prices from £686 to £2,985, a £2,299 spread on the same certified stone. Brilliant Earth lists it at £2,985. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.74

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.5°

Pavilion angle40.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG823695115

Dimensions12.09 × 6.34 × 3.99 mm

L/W Ratio1.91

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG823695115

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: £2,985 GBP|Low: £686 GBP|High: £3,784 GBP|Avg: £1,800 GBP|-21.1%

Brilliant Earth

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October 30, 2026

Retailer 6£686 GBP

Retailer 22£746 GBP

Retailer 8£768 GBP

Retailer 20£796 GBP

Retailer 2£878 GBP

Retailer 18£925 GBP

Retailer 7£927 GBP

Retailer 5£959 GBP

Retailer 3£1,136 GBP

Retailer 13£1,223 GBP

Retailer 19£1,265 GBP

Retailer 10£1,275 GBP

Retailer 17£1,462 GBP

Retailer 12£1,770 GBP

Retailer 4£2,195 GBP

Retailer 21£2,237 GBP

Retailer 9£2,362 GBP

Retailer 11£2,603 GBP

Retailer 14£2,669 GBP

Retailer 16£2,713 GBP

Retailer 15£2,766 GBP

Brilliant Earth£2,985 GBP

27 data points across 22 retailers

23 retailers£686 GBP to £2,985 GBP

Cheapest Retailer

£686 GBP

$919 USD

Retailer 2

£746 GBP

$1,000 USD

View

Retailer 3

£768 GBP

$1,029 USD

View

Final sale: no returns

Retailer 4

£796 GBP

$1,066 USD

View

Retailer 5

£878 GBP

View

Retailer 6

£925 GBP

$1,240 USD

View

Retailer 7

£927 GBP

HK$9,700 HKD

View

Retailer 8

£959 GBP

$1,285 USD

View

Retailer 9

£984 GBP

$1,319 USD

View

Price last confirmed 13 days ago

Retailer 10

£1,136 GBP

$1,522 USD

View

Retailer 11

£1,223 GBP

View

Retailer 12

£1,265 GBP

€1,614 EUR

View

Retailer 13

£1,275 GBP

$1,708 USD

View

B+

Retailer 14

£1,462 GBP

ZAR 31,655 ZAR

View

B+

Retailer 15

£1,770 GBP

$2,371 USD

View

B+

Retailer 16

£2,195 GBP

View

Retailer 17

£2,237 GBP

$2,997 USD

View

B+

Retailer 18

£2,362 GBP

$3,165 USD

View

Retailer 19

£2,603 GBP

$3,488 USD

View

Retailer 20

£2,669 GBP

SGD 4,833 SGD

View

Retailer 21

£2,713 GBP

View

Retailer 22

£2,766 GBP

$3,706 USD

View

Most Expensive

Brilliant Earth

21546787A · Oct 30

£2,985 GBP

$4,000 USD

View

22 more retailers have this diamond

Prices start from £686 GBPSave up to £2,299 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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