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Round|Lab Grown|IGI

1.81ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG818658778

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818658778

Diamond specifications and retailer prices

From £290 GBP
$386 USD
As of October 30, 2026
Save £2,181 GBP (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,471 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818658778 or 818658778. Listed at 21 retailers as of October 29, 2026, with prices from £290 to £2,471, a £2,181 spread on the same certified stone. Brilliant Earth lists it at £2,471. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658778
Dimensions7.81 × 7.87 × 4.83 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
7.81 mm7.87 mm1.81 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658778
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.6%

Caratlytics Score

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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 30
Current: £2,471 GBP|Low: £290 GBP|High: £2,471 GBP|Avg: £904 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 5£290 GBP
Retailer 16£454 GBP
Retailer 3£462 GBP
Retailer 10£485 GBP
Retailer 12£520 GBP
Retailer 15£553 GBP
Retailer 11£577 GBP
Retailer 6£732 GBP
Retailer 14£748 GBP
Retailer 4£914 GBP
Retailer 8£958 GBP
Retailer 7£1,067 GBP
Retailer 2£1,217 GBP
Retailer 17£1,246 GBP
Retailer 13£1,266 GBP
Retailer 9£1,945 GBP
Brilliant Earth£2,471 GBP

27 data points across 17 retailers

21 retailers£290 GBP to £2,471 GBP

Retailer 1
-
£264 GBP
$351 USD
Price last confirmed 20 days ago
A
Retailer 2
-
£290 GBP
$386 USD
View
Final sale: no returns
Retailer 3
-
£327 GBP
$435 USD
View
Price last confirmed 18 days ago
Retailer 4
-
£327 GBP
$435 USD
View
Price last confirmed 28 days ago
A
Retailer 5
-
£454 GBP
$605 USD
View
A
Retailer 6
-
£462 GBP
$615 USD
View
A
Retailer 7
-
£485 GBP
View
A
Retailer 8
-
£520 GBP
€660 EUR
View
A
Retailer 9
-
£553 GBP
ZAR 11,907 ZAR
View
A
Retailer 10
-
£577 GBP
View
A
Retailer 11
-
£732 GBP
$975 USD
View
A
Retailer 12
-
£748 GBP
A$1,532 AUD
View
A
Retailer 13
-
£914 GBP
$1,217 USD
View
B+
Retailer 14
-
£958 GBP
$1,276 USD
View
Retailer 15
-
£1,050 GBP
$1,398 USD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
£1,067 GBP
$1,421 USD
View
B+
Retailer 17
-
£1,217 GBP
$1,620 USD
View
B+
Retailer 18
-
£1,246 GBP
$1,659 USD
View
B+
Retailer 19
-
£1,266 GBP
View
B
Retailer 20
-
£1,945 GBP
$2,590 USD
View
Most Expensive
B
Brilliant Earth
21580806A · Oct 29
£2,471 GBP
$3,290 USD
View
20 more retailers have this diamond
Prices start from £290 GBPSave up to £2,181 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
£290 GBP