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Round|Lab Grown|IGI

1.81ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG840634392

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840634392

Diamond specifications and retailer prices

From £354 GBP
$471 USD
As of October 29, 2026
Save £2,643 GBP (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,996 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.81ct lab-grown round diamond

This 1.81ct 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 LG840634392 or 840634392. Listed at 21 retailers as of October 29, 2026, with prices from £354 to £2,996, a £2,643 spread on the same certified stone. Brilliant Earth lists it at £2,996. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634392
Dimensions7.82 × 7.87 × 4.81 mm
L/W Ratio1.01
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
Top View
7.82 mm7.87 mm1.81 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634392
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £2,996 GBP|Low: £354 GBP|High: £3,004 GBP|Avg: £1,101 GBP|-0.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 6
Retailer 7
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Retailer 13
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Retailer 21
October 30, 2026
Retailer 7£354 GBP
Retailer 20£396 GBP
Retailer 8£409 GBP
Retailer 12£439 GBP
Retailer 5£544 GBP
Retailer 15£564 GBP
Retailer 10£624 GBP
Retailer 3£684 GBP
Retailer 2£725 GBP
Retailer 13£727 GBP
Retailer 16£753 GBP
Retailer 6£1,036 GBP
Retailer 4£1,178 GBP
Retailer 14£1,409 GBP
Retailer 11£1,431 GBP
Retailer 9£1,506 GBP
Retailer 19£1,531 GBP
Retailer 21£1,563 GBP
Retailer 17£1,612 GBP
Retailer 18£2,459 GBP
Brilliant Earth£2,996 GBP

12 data points across 21 retailers

21 retailers£354 GBP to £2,996 GBP

A
Cheapest Retailer
-
£354 GBP
$471 USD
A
Retailer 2
-
£396 GBP
$527 USD
View
A
Retailer 3
-
£409 GBP
$545 USD
View
Final sale: no returns
A
Retailer 4
-
£439 GBP
$584 USD
View
A
Retailer 5
-
£544 GBP
$725 USD
View
A
Retailer 6
-
£564 GBP
View
A
Retailer 7
-
£624 GBP
$831 USD
View
A
Retailer 8
-
£684 GBP
$911 USD
View
A
Retailer 9
-
£725 GBP
View
A
Retailer 10
-
£727 GBP
€922 EUR
View
A
Retailer 11
-
£753 GBP
ZAR 16,201 ZAR
View
B+
Retailer 12
-
£1,036 GBP
$1,379 USD
View
B+
Retailer 13
-
£1,178 GBP
$1,569 USD
View
B+
Retailer 14
-
£1,409 GBP
$1,876 USD
View
B+
Retailer 15
-
£1,431 GBP
$1,906 USD
View
B+
Retailer 16
-
£1,506 GBP
SGD 2,711 SGD
View
B+
Retailer 17
-
£1,531 GBP
$2,039 USD
View
B+
Retailer 18
-
£1,563 GBP
$2,082 USD
View
B+
Retailer 19
-
£1,612 GBP
View
B
Retailer 20
-
£2,459 GBP
$3,275 USD
View
Most Expensive
B
Brilliant Earth
22192244A · Oct 29
£2,996 GBP
$3,990 USD
View
20 more retailers have this diamond
Prices start from £354 GBPSave up to £2,643 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.

A
1.81ct Round
£354 GBP