Marquise|Lab Grown|IGI

1.61ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG761521649

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG761521649

Diamond specifications and retailer prices

From £395 GBP

$529 USD

As of October 30, 2026

Save £1,949 GBP (83%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £2,343 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 1.61ct lab-grown marquise diamond

This 1.61ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG761521649 or 761521649. Listed at 26 retailers as of October 30, 2026, with prices from £395 to £2,343, a £1,949 spread on the same certified stone. Brilliant Earth lists it at £2,343. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.61

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishVery Good

SymmetryExcellent

FluorescenceNone

Crown angle33.3°

Pavilion angle41.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG761521649

Dimensions11.63 × 6.14 × 3.86 mm

L/W Ratio1.89

Girdle conditionFaceted

Culet sizePointed

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

PolishVery Good

SymmetryExcellent

FluorescenceNone

CertificateIGI LG761521649

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: £2,343 GBP|Low: £395 GBP|High: £3,605 GBP|Avg: £1,191 GBP|-35.0%

Brilliant Earth

Retailer 2

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November 1, 2026

Retailer 16£395 GBP

Retailer 7£441 GBP

Retailer 17£489 GBP

Retailer 2£517 GBP

Retailer 14£568 GBP

Retailer 10£590 GBP

Retailer 20£655 GBP

Retailer 8£657 GBP

Retailer 13£753 GBP

Retailer 5£841 GBP

Retailer 4£903 GBP

Retailer 18£951 GBP

Retailer 15£1,096 GBP

Retailer 3£1,287 GBP

Retailer 11£1,422 GBP

Retailer 6£1,590 GBP

Retailer 9£1,673 GBP

Retailer 21£1,814 GBP

Retailer 12£2,023 GBP

Retailer 19£2,053 GBP

Brilliant Earth£2,343 GBP

30 data points across 21 retailers

26 retailers£395 GBP to £2,343 GBP

Cheapest Retailer

£395 GBP

$529 USD

Retailer 2

£441 GBP

$591 USD

View

Final sale: no returns

Retailer 3

£458 GBP

$614 USD

View

Price last confirmed 24 days ago

Retailer 4

£489 GBP

$655 USD

View

Retailer 5

£515 GBP

$690 USD

View

Price last confirmed 33 days ago

Retailer 6

£517 GBP

View

Retailer 7

£568 GBP

$761 USD

View

Price last confirmed 16 days ago

Retailer 8

£568 GBP

$761 USD

View

Price last confirmed 29 days ago

Retailer 9

£583 GBP

HK$6,100 HKD

View

Price last confirmed 58 days ago

Retailer 10

£590 GBP

$790 USD

View

Retailer 11

£655 GBP

$878 USD

View

Retailer 12

£657 GBP

$880 USD

View

Retailer 13

£753 GBP

View

Retailer 14

£841 GBP

ZAR 18,199 ZAR

View

Retailer 15

£903 GBP

$1,210 USD

View

Retailer 16

£951 GBP

€1,214 EUR

View

Retailer 17

£1,096 GBP

$1,469 USD

View

B+

Retailer 18

£1,287 GBP

$1,724 USD

View

B+

Retailer 19

£1,422 GBP

View

Retailer 20

£1,493 GBP

$2,001 USD

View

Price last confirmed 32 days ago

B+

Retailer 21

£1,590 GBP

$2,130 USD

View

B+

Retailer 22

£1,673 GBP

$2,242 USD

View

B+

Retailer 23

£1,814 GBP

$2,431 USD

View

Retailer 24

£2,023 GBP

$2,710 USD

View

Price last confirmed 14 days ago

Retailer 25

£2,053 GBP

View

Most Expensive

Brilliant Earth

18182037A · Oct 31

£2,343 GBP

$3,140 USD

View

25 more retailers have this diamond

Prices start from £395 GBPSave up to £1,949 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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