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Round|Lab Grown|IGI

3.00ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG490193309

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490193309

Diamond specifications and retailer prices

From £1,211 GBP
As of November 5, 2026
Save £7,342 GBP (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £8,553 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3ct lab-grown round diamond

This 3ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490193309 or 490193309. Listed at 11 retailers as of November 5, 2026, with prices from £1,211 to £8,553, a £7,342 spread on the same certified stone. MOH London lists it at £8,553. 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

3.00
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490193309
Dimensions9.37 × 9.33 × 5.59 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
9.37 mm9.33 mm3.00 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490193309
Side View
Table 58.5%Crown 33.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 59.8%

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: £8,553 GBP|Low: £1,211 GBP|High: £9,661 GBP|Avg: £5,080 GBP|-0.3%
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£1,211 GBP
Retailer 8£3,633 GBP
Retailer 11£3,808 GBP
Retailer 12£4,069 GBP
Retailer 3£4,214 GBP
Retailer 9£4,214 GBP
Retailer 2£4,236 GBP
Retailer 4£4,660 GBP
Retailer 13£5,003 GBP
Retailer 7£5,284 GBP
Retailer 10£6,515 GBP
MOH London£8,553 GBP
Retailer 5£9,661 GBP

28 data points across 13 retailers

11 retailers£1,211 GBP to £8,553 GBP

A
Cheapest Retailer
-
£1,211 GBP
B+
Retailer 2
-
£3,633 GBP
View
B+
Retailer 3
-
£3,808 GBP
View
B+
Retailer 4
-
£4,069 GBP
View
Final sale: no returns
B+
Retailer 5
-
£4,214 GBP
View
Retailer 6
-
£4,214 GBP
View
Price last confirmed 25 days ago
B+
Retailer 7
-
£4,236 GBP
View
B
Retailer 8
-
£5,003 GBP
View
B
Retailer 9
-
£5,284 GBP
View
B
Retailer 10
-
£6,515 GBP
View
Most Expensive
B
MOH London
LG490193309 · Nov 5
£8,553 GBP
View
10 more retailers have this diamond
Prices start from £1,211 GBPSave up to £7,342 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
3.00ct Round
£1,211 GBP