Round|Lab Grown|IGI

1.91ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG818615290

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818615290

Diamond specifications and retailer prices

From £509 GBP

$678 USD

As of October 29, 2026

Save £3,471 GBP (87%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £3,980 GBP at Do Amore Diamonds · As of October 29, 2026

View at Do Amore Diamonds

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round 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 LG818615290 or 818615290. Listed at 25 retailers as of October 29, 2026, with prices from £509 to £3,980, a £3,471 spread on the same certified stone. Do Amore Diamonds lists it at £3,980. 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 angle34.4°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818615290

Dimensions8.00 × 8.04 × 4.87 mm

L/W Ratio1.00

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG818615290

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 29

Current: £3,980 GBP|Low: £376 GBP|High: £4,768 GBP|Avg: £1,567 GBP

Do Amore Diamonds

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October 30, 2026

Retailer 4£509 GBP

Retailer 21£579 GBP

Retailer 7£591 GBP

Retailer 14£591 GBP

Retailer 6£853 GBP

Retailer 9£921 GBP

Retailer 24£924 GBP

Retailer 5£935 GBP

Retailer 19£992 GBP

Retailer 23£1,024 GBP

Retailer 2£1,044 GBP

Retailer 18£1,102 GBP

Retailer 20£1,199 GBP

Retailer 11£1,492 GBP

Retailer 17£1,578 GBP

Retailer 16£1,834 GBP

Retailer 3£1,889 GBP

Retailer 8£1,988 GBP

Retailer 10£2,026 GBP

Retailer 12£2,333 GBP

Retailer 13£2,575 GBP

Retailer 15£2,757 GBP

Retailer 22£3,199 GBP

Do Amore Diamonds£3,980 GBP

35 data points across 24 retailers

25 retailers£509 GBP to £3,980 GBP

Cheapest Retailer

£509 GBP

$678 USD

Retailer 2

£579 GBP

$771 USD

View

Final sale: no returns

Retailer 3

£591 GBP

$787 USD

View

Price last confirmed 14 days ago

Retailer 4

£591 GBP

$787 USD

View

Retailer 5

£853 GBP

A$1,748 AUD

View

Retailer 6

£921 GBP

$1,226 USD

View

Retailer 7

£924 GBP

$1,230 USD

View

Retailer 8

£935 GBP

$1,245 USD

View

Retailer 9

£992 GBP

€1,258 EUR

View

B+

Retailer 10

£992 GBP

$1,321 USD

View

B+

Retailer 11

£1,024 GBP

$1,364 USD

View

B+

Retailer 12

£1,044 GBP

View

B+

Retailer 13

£1,199 GBP

ZAR 25,791 ZAR

View

B+

Retailer 14

£1,492 GBP

$1,986 USD

View

B+

Retailer 15

£1,578 GBP

$2,101 USD

View

Retailer 16

£1,834 GBP

$2,442 USD

View

Retailer 17

£1,889 GBP

$2,515 USD

View

Retailer 18

£1,988 GBP

CA$3,676 CAD

View

Retailer 19

£2,026 GBP

$2,698 USD

View

Retailer 20

£2,333 GBP

$3,107 USD

View

Retailer 21

£2,333 GBP

$3,107 USD

View

Retailer 22

£2,575 GBP

View

Retailer 23

£2,757 GBP

$3,672 USD

View

Retailer 24

£3,199 GBP

$4,260 USD

View

Most Expensive

Do Amore Diamonds

20-E93168 · Oct 29

£3,980 GBP

$5,300 USD

View

24 more retailers have this diamond

Prices start from £509 GBPSave up to £3,471 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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