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Round|Lab Grown|IGI

3.03ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG500165207

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500165207

Diamond specifications and retailer prices

From £1,256 GBP
As of November 5, 2026
Save £8,130 GBP (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £9,386 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.03ct lab-grown round diamond

This 3.03ct 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 LG500165207 or 500165207. Listed at 12 retailers as of November 5, 2026, with prices from £1,256 to £9,386, a £8,130 spread on the same certified stone. MOH London lists it at £9,386. 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

3.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500165207
Dimensions9.27 × 9.17 × 5.63 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
9.27 mm9.17 mm3.03 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500165207
Side View
Table 59.5%Crown 33.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.9%

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: £9,386 GBP|Low: £1,256 GBP|High: £9,537 GBP|Avg: £5,084 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£1,256 GBP
Retailer 8£3,987 GBP
Retailer 12£4,179 GBP
Retailer 11£4,465 GBP
Retailer 3£4,625 GBP
Retailer 9£4,625 GBP
Retailer 4£4,633 GBP
Retailer 2£4,649 GBP
Retailer 5£4,948 GBP
Retailer 13£5,491 GBP
Retailer 7£5,696 GBP
Retailer 10£7,144 GBP
MOH London£9,386 GBP

41 data points across 13 retailers

12 retailers£1,256 GBP to £9,386 GBP

A
Cheapest Retailer
-
£1,256 GBP
B+
Retailer 2
-
£3,987 GBP
View
B+
Retailer 3
-
£4,179 GBP
View
B+
Retailer 4
-
£4,465 GBP
View
Final sale: no returns
B+
Retailer 5
-
£4,625 GBP
View
Retailer 6
-
£4,625 GBP
View
Price last confirmed 25 days ago
B+
Retailer 7
-
£4,633 GBP
View
B+
Retailer 8
-
£4,649 GBP
View
B
Retailer 9
-
£5,491 GBP
View
B
Retailer 10
-
£5,696 GBP
View
B
Retailer 11
-
£7,144 GBP
View
Most Expensive
B
MOH London
LG500165207 · Nov 5
£9,386 GBP
View
11 more retailers have this diamond
Prices start from £1,256 GBPSave up to £8,130 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
3.03ct Round
£1,256 GBP