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Round|Lab Grown|IGI

1.81ct J I1 Round Lab Grown Diamond

ID • J/I1 • IGI LG492136662

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492136662

Diamond specifications and retailer prices

From £735 GBP
$985 USD
As of November 1, 2026
Save £2,156 GBP (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,891 GBP at MOH London · As of November 1, 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 I1 clarity (included), with a top-tier cut grade and certified by IGI LG492136662 or 492136662. Listed at 8 retailers as of November 1, 2026, with prices from £735 to £2,891, a £2,156 spread on the same certified stone. MOH London lists it at £2,891. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.81
Carat
J
Colour
I1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492136662
Dimensions7.85 × 7.93 × 4.70 mm
L/W Ratio1.01
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
7.85 mm7.93 mm1.81 ctJ / I1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492136662
Side View
Table 59.5%Crown 32.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,891 GBP|Low: £705 GBP|High: £2,930 GBP|Avg: £1,289 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3£735 GBP
Retailer 6£799 GBP
Retailer 4£852 GBP
Retailer 8£852 GBP
Retailer 9£1,253 GBP
Retailer 5£1,363 GBP
Retailer 7£1,598 GBP
Retailer 2£1,837 GBP
MOH London£2,891 GBP

15 data points across 9 retailers

8 retailers£735 GBP to £2,891 GBP

B+
Cheapest Retailer
-
£735 GBP
$985 USD
B+
Retailer 2
-
£799 GBP
$1,071 USD
View
B+
Retailer 3
-
£852 GBP
$1,142 USD
View
Retailer 4
-
£852 GBP
$1,142 USD
View
Price last confirmed 19 days ago
B
Retailer 5
-
£1,363 GBP
$1,826 USD
View
B
Retailer 6
-
£1,598 GBP
$2,141 USD
View
B
Retailer 7
-
£1,837 GBP
$2,461 USD
View
Most Expensive
B
MOH London
LG492136662 · Nov 1
£2,891 GBP
View
7 more retailers have this diamond
Prices start from £735 GBPSave up to £2,156 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.

B+
1.81ct Round
£735 GBP