Emerald|Lab Grown|IGI

1.78ct D FL Emerald Lab Grown Diamond

ID • D/FL • IGI LG840634464

Shape and cutting style on the report: Emerald cut

Certificate IGI LG840634464

Diamond specifications and retailer prices

From £352 GBP

$471 USD

As of October 30, 2026

Save £2,891 GBP (89%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: £3,243 GBP at Rare Carat · As of October 28, 2026

View at Rare Carat

About this 1.78ct lab-grown emerald diamond

This 1.78ct lab-grown emerald sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634464 or 840634464. Listed at 20 retailers as of October 28, 2026, with prices from £352 to £3,243, a £2,891 spread on the same certified stone. Rare Carat lists it at £3,243. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.4°

Pavilion angle38.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG840634464

Dimensions8.06 × 5.76 × 3.91 mm

L/W Ratio1.40

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 LG840634464

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: £3,243 GBP|Low: £352 GBP|High: £3,243 GBP|Avg: £1,183 GBP

Rare Carat

Retailer 2

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October 30, 2026

Retailer 10£352 GBP

Retailer 5£394 GBP

Retailer 6£394 GBP

Retailer 19£436 GBP

Retailer 8£619 GBP

Retailer 17£661 GBP

Retailer 14£667 GBP

Retailer 9£681 GBP

Retailer 13£724 GBP

Retailer 16£750 GBP

Retailer 3£1,057 GBP

Retailer 18£1,172 GBP

Retailer 11£1,385 GBP

Retailer 20£1,402 GBP

Retailer 4£1,424 GBP

Retailer 2£1,532 GBP

Retailer 15£1,611 GBP

Retailer 7£1,899 GBP

Retailer 12£2,561 GBP

Rare Carat£3,243 GBP

12 data points across 20 retailers

20 retailers£352 GBP to £3,243 GBP

Cheapest Retailer

£352 GBP

$471 USD

Retailer 2

£394 GBP

$528 USD

View

Final sale: no returns

Retailer 3

£394 GBP

$528 USD

View

Retailer 4

£436 GBP

$584 USD

View

Retailer 5

£619 GBP

$830 USD

View

Retailer 6

£661 GBP

$885 USD

View

Retailer 7

£667 GBP

€851 EUR

View

Retailer 8

£681 GBP

$913 USD

View

Retailer 9

£724 GBP

View

Retailer 10

£750 GBP

ZAR 16,226 ZAR

View

B+

Retailer 11

£1,057 GBP

$1,416 USD

View

B+

Retailer 12

£1,172 GBP

$1,571 USD

View

B+

Retailer 13

£1,385 GBP

SGD 2,507 SGD

View

Retailer 14

£1,402 GBP

$1,879 USD

View

B+

Retailer 15

£1,424 GBP

$1,908 USD

View

B+

Retailer 16

£1,532 GBP

$2,053 USD

View

B+

Retailer 17

£1,611 GBP

View

B+

Retailer 18

£1,899 GBP

$2,545 USD

View

Retailer 19

£2,561 GBP

$3,431 USD

View

Most Expensive

Rare Carat

PE-254688 · Oct 28

£3,243 GBP

$4,345 USD

View

19 more retailers have this diamond

Prices start from £352 GBPSave up to £2,891 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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