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Round|Lab Grown|IGI

3.05ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG490191103

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490191103

Diamond specifications and retailer prices

From £1,226 GBP
As of November 5, 2026
Save £7,464 GBP (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £8,690 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.05ct lab-grown round diamond

This 3.05ct 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 LG490191103 or 490191103. Listed at 10 retailers as of November 5, 2026, with prices from £1,226 to £8,690, a £7,464 spread on the same certified stone. MOH London lists it at £8,690. 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

3.05
Carat
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490191103
Dimensions9.43 × 9.35 × 5.59 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
9.43 mm9.35 mm3.05 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490191103
Side View
Table 58.5%Crown 33.3°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £8,690 GBP|Low: £1,226 GBP|High: £9,822 GBP|Avg: £5,299 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
November 5, 2026
Retailer 2£1,226 GBP
Retailer 5£3,691 GBP
Retailer 8£3,868 GBP
Retailer 10£4,134 GBP
Retailer 6£4,282 GBP
Retailer 11£4,732 GBP
Retailer 9£5,083 GBP
Retailer 4£5,369 GBP
Retailer 7£6,617 GBP
MOH London£8,690 GBP
Retailer 3£9,822 GBP

18 data points across 11 retailers

10 retailers£1,226 GBP to £8,690 GBP

A
Cheapest Retailer
-
£1,226 GBP
B+
Retailer 2
-
£3,691 GBP
View
B+
Retailer 3
-
£3,868 GBP
View
B+
Retailer 4
-
£4,134 GBP
View
Final sale: no returns
Retailer 5
-
£4,282 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£4,282 GBP
View
B
Retailer 7
-
£5,083 GBP
View
B
Retailer 8
-
£5,369 GBP
View
B
Retailer 9
-
£6,617 GBP
View
Most Expensive
B
MOH London
LG490191103 · Nov 5
£8,690 GBP
View
9 more retailers have this diamond
Prices start from £1,226 GBPSave up to £7,464 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
3.05ct Round
£1,226 GBP