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Round|Lab Grown|IGI

1.81ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG478124679

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478124679

Diamond specifications and retailer prices

From £761 GBP
$1,020 USD
As of October 30, 2026
Save £2,759 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,520 GBP at MOH London · As of October 29, 2026
View at MOH London

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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478124679 or 478124679. Listed at 11 retailers as of October 29, 2026, with prices from £761 to £3,520, a £2,759 spread on the same certified stone. MOH London lists it at £3,520. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.81
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478124679
Dimensions7.77 × 7.80 × 4.80 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.77 mm7.80 mm1.81 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478124679
Side View
Table 61.0%Crown 36.2°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
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: £3,520 GBP|Low: £752 GBP|High: £3,544 GBP|Avg: £1,591 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 2£761 GBP
Retailer 7£940 GBP
Retailer 11£1,022 GBP
Retailer 10£1,052 GBP
Retailer 8£1,090 GBP
Retailer 13£1,090 GBP
Retailer 6£1,268 GBP
Retailer 4£1,518 GBP
Retailer 9£1,726 GBP
Retailer 3£2,032 GBP
Retailer 12£2,043 GBP
Retailer 5£2,438 GBP
MOH London£3,520 GBP

23 data points across 13 retailers

11 retailers£761 GBP to £3,520 GBP

A
Cheapest Retailer
-
£761 GBP
$1,020 USD
B+
Retailer 2
-
£940 GBP
$1,259 USD
View
B+
Retailer 3
-
£1,022 GBP
$1,370 USD
View
B+
Retailer 4
-
£1,052 GBP
$1,410 USD
View
Final sale: no returns
B+
Retailer 5
-
£1,090 GBP
$1,460 USD
View
Retailer 6
-
£1,090 GBP
$1,460 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
£1,268 GBP
View
B
Retailer 8
-
£1,726 GBP
$2,313 USD
View
B
Retailer 9
-
£2,032 GBP
$2,722 USD
View
B
Retailer 10
-
£2,043 GBP
$2,737 USD
View
Most Expensive
B
MOH London
LG478124679 · Oct 29
£3,520 GBP
View
10 more retailers have this diamond
Prices start from £761 GBPSave up to £2,759 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
£761 GBP