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Round|Lab Grown|IGI

3.23ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG490174551

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490174551

Diamond specifications and retailer prices

From £1,345 GBP
As of November 5, 2026
Save £8,663 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £10,008 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 3.23ct lab-grown round diamond

This 3.23ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490174551 or 490174551. Listed at 12 retailers as of November 3, 2026, with prices from £1,345 to £10,008, a £8,663 spread on the same certified stone. MOH London lists it at £10,008. 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

3.23
Carat
J
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490174551
Dimensions9.52 × 9.43 × 5.81 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
9.52 mm9.43 mm3.23 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490174551
Side View
Table 56.5%Crown 34.7°Girdle: MediumPavilion 40.3°Culet: NoneDepth 61.4%

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: Nov 5
Current: £10,008 GBP|Low: £1,345 GBP|High: £10,142 GBP|Avg: £5,404 GBP
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
November 5, 2026
Retailer 6£1,345 GBP
Retailer 8£4,240 GBP
Retailer 12£4,443 GBP
Retailer 11£4,748 GBP
Retailer 3£4,919 GBP
Retailer 4£4,919 GBP
Retailer 9£4,919 GBP
Retailer 2£4,943 GBP
Retailer 5£5,251 GBP
Retailer 13£5,838 GBP
Retailer 7£5,951 GBP
Retailer 10£7,593 GBP
MOH London£10,008 GBP

41 data points across 13 retailers

12 retailers£1,345 GBP to £10,008 GBP

A
Cheapest Retailer
-
£1,345 GBP
B+
Retailer 2
-
£4,240 GBP
View
B+
Retailer 3
-
£4,443 GBP
View
B+
Retailer 4
-
£4,748 GBP
View
Final sale: no returns
B+
Retailer 5
-
£4,919 GBP
View
B+
Retailer 6
-
£4,919 GBP
View
Retailer 7
-
£4,919 GBP
View
Price last confirmed 25 days ago
B+
Retailer 8
-
£4,943 GBP
View
B
Retailer 9
-
£5,838 GBP
View
B
Retailer 10
-
£5,951 GBP
View
B
Retailer 11
-
£7,593 GBP
View
Most Expensive
B
MOH London
LG490174551 · Nov 3
£10,008 GBP
View
11 more retailers have this diamond
Prices start from £1,345 GBPSave up to £8,663 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
3.23ct Round
£1,345 GBP