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Round|Lab Grown|IGI

3.20ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG485136560

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136560

Diamond specifications and retailer prices

From £1,330 GBP
As of November 5, 2026
Save £8,562 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £9,892 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.2ct lab-grown round diamond

This 3.2ct 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 LG485136560 or 485136560. Listed at 11 retailers as of November 5, 2026, with prices from £1,330 to £9,892, a £8,562 spread on the same certified stone. MOH London lists it at £9,892. 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

3.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136560
Dimensions9.57 × 9.54 × 5.63 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
9.57 mm9.54 mm3.20 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136560
Side View
Table 61.0%Crown 32.9°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 59.0%

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: £9,892 GBP|Low: £1,330 GBP|High: £10,051 GBP|Avg: £5,723 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2£1,330 GBP
Retailer 4£4,202 GBP
Retailer 6£4,706 GBP
Retailer 7£4,878 GBP
Retailer 8£5,206 GBP
Retailer 3£5,898 GBP
Retailer 9£6,279 GBP
Retailer 5£7,525 GBP
MOH London£9,892 GBP

16 data points across 9 retailers

11 retailers£1,330 GBP to £9,892 GBP

A
Cheapest Retailer
-
£1,330 GBP
B+
Retailer 2
-
£4,202 GBP
View
B+
Retailer 3
-
£4,404 GBP
View
B+
Retailer 4
-
£4,706 GBP
View
Final sale: no returns
Retailer 5
-
£4,874 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£4,874 GBP
View
B+
Retailer 7
-
£4,878 GBP
View
B
Retailer 8
-
£5,786 GBP
View
B
Retailer 9
-
£5,898 GBP
View
B
Retailer 10
-
£7,525 GBP
View
Most Expensive
B
MOH London
LG485136560 · Nov 5
£9,892 GBP
View
10 more retailers have this diamond
Prices start from £1,330 GBPSave up to £8,562 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
3.20ct Round
£1,330 GBP