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Round|Lab Grown|IGI

1.83ct J I1 Round Lab Grown Diamond

ID • J/I1 • IGI LG490190993

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490190993

Diamond specifications and retailer prices

From £741 GBP
$995 USD
As of November 1, 2026
Save £2,191 GBP (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,933 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.83ct lab-grown round diamond

This 1.83ct 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 LG490190993 or 490190993. Listed at 8 retailers as of October 29, 2026, with prices from £741 to £2,933, a £2,191 spread on the same certified stone. MOH London lists it at £2,933. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
J
Colour
I1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490190993
Dimensions7.97 × 7.99 × 4.74 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
7.97 mm7.99 mm1.83 ctJ / I1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490190993
Side View
Table 57.5%Crown 33°GirdlePavilion 40.2°Culet: NoneDepth 59.4%

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: £2,933 GBP|Low: £712 GBP|High: £2,953 GBP|Avg: £1,311 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 3£741 GBP
Retailer 6£807 GBP
Retailer 4£860 GBP
Retailer 8£860 GBP
Retailer 9£1,263 GBP
Retailer 5£1,374 GBP
Retailer 7£1,613 GBP
Retailer 2£1,854 GBP
MOH London£2,933 GBP

13 data points across 9 retailers

8 retailers£741 GBP to £2,933 GBP

B+
Cheapest Retailer
-
£741 GBP
$995 USD
B+
Retailer 2
-
£807 GBP
$1,083 USD
View
B+
Retailer 3
-
£860 GBP
$1,154 USD
View
Retailer 4
-
£860 GBP
$1,154 USD
View
Price last confirmed 21 days ago
B
Retailer 5
-
£1,374 GBP
$1,844 USD
View
B
Retailer 6
-
£1,613 GBP
$2,164 USD
View
B
Retailer 7
-
£1,854 GBP
$2,488 USD
View
Most Expensive
B
MOH London
LG490190993 · Oct 29
£2,933 GBP
View
7 more retailers have this diamond
Prices start from £741 GBPSave up to £2,191 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+
1.83ct Round
£741 GBP