Emerald|Lab Grown|IGI

1.91ct E IF Emerald Lab Grown Diamond

ID • E/IF • IGI LG578315529

Shape and cutting style on the report: Emerald cut

Certificate IGI LG578315529

Diamond specifications and retailer prices

From £291 GBP

$388 USD

As of October 27, 2026

Save £3,058 GBP (91%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £3,349 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 1.91ct lab-grown emerald diamond

This 1.91ct lab-grown emerald sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG578315529 or 578315529. Listed at 26 retailers as of October 27, 2026, with prices from £291 to £3,349, a £3,058 spread on the same certified stone. Brilliant Earth lists it at £3,349. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle30.4°

Pavilion angle40.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG578315529

Dimensions5.83 × 5.83 × 3.87 mm

L/W Ratio1.00

Culet sizeLarge

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG578315529

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 27

Current: £3,349 GBP|Low: £291 GBP|High: £3,777 GBP|Avg: £1,210 GBP|-11.3%

Brilliant Earth

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October 29, 2026

Retailer 23£291 GBP

Retailer 18£326 GBP

Retailer 16£327 GBP

Retailer 8£362 GBP

Retailer 9£362 GBP

Retailer 7£394 GBP

Retailer 22£473 GBP

Retailer 4£487 GBP

Retailer 24£557 GBP

Retailer 19£580 GBP

Retailer 21£622 GBP

Retailer 2£655 GBP

Retailer 13£840 GBP

Retailer 3£867 GBP

Retailer 6£1,053 GBP

Retailer 11£1,153 GBP

Retailer 12£1,162 GBP

Retailer 5£1,190 GBP

Retailer 15£1,191 GBP

Retailer 10£1,348 GBP

Retailer 17£1,407 GBP

Retailer 20£1,421 GBP

Retailer 14£1,464 GBP

Brilliant Earth£3,349 GBP

30 data points across 24 retailers

26 retailers£291 GBP to £3,349 GBP

Cheapest Retailer

£291 GBP

$388 USD

Retailer 2

£326 GBP

$434 USD

View

Final sale: no returns

Retailer 3

£327 GBP

$435 USD

View

Retailer 4

£362 GBP

$482 USD

View

Retailer 5

£362 GBP

$482 USD

View

Retailer 6

£394 GBP

HK$4,100 HKD

View

Retailer 7

£473 GBP

$630 USD

View

Retailer 8

£487 GBP

$648 USD

View

Retailer 9

£557 GBP

$742 USD

View

Retailer 10

£580 GBP

€735 EUR

View

Retailer 11

£622 GBP

ZAR 13,371 ZAR

View

Retailer 12

£655 GBP

View

Retailer 13

£840 GBP

A$1,720 AUD

View

Retailer 14

£867 GBP

$1,155 USD

View

B+

Retailer 15

£1,053 GBP

View

B+

Retailer 16

£1,153 GBP

SGD 2,075 SGD

View

B+

Retailer 17

£1,162 GBP

$1,548 USD

View

B+

Retailer 18

£1,190 GBP

$1,585 USD

View

B+

Retailer 19

£1,191 GBP

$1,586 USD

View

B+

Retailer 20

£1,265 GBP

$1,685 USD

View

B+

Retailer 21

£1,348 GBP

$1,795 USD

View

B+

Retailer 22

£1,359 GBP

$1,810 USD

View

Price last confirmed 43 days ago

B+

Retailer 23

£1,407 GBP

A$2,882 AUD

View

Price last confirmed 20 days ago

B+

Retailer 24

£1,421 GBP

View

B+

Retailer 25

£1,464 GBP

$1,950 USD

View

Most Expensive

Brilliant Earth

18469400A · Oct 29

£3,349 GBP

$4,460 USD

View

25 more retailers have this diamond

Prices start from £291 GBPSave up to £3,058 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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