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Round|Lab Grown|IGI

3.03ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG830683594

Shape and cutting style on the report: Round brilliant

Certificate IGI LG830683594

Diamond specifications and retailer prices

From £252 GBP
As of November 5, 2026
Save £1,420 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,672 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3.03ct lab-grown round diamond

This 3.03ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG830683594 or 830683594. Listed at 15 retailers as of November 5, 2026, with prices from £252 to £1,672, a £1,420 spread on the same certified stone. Brilliant Earth lists it at £1,672. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830683594
Dimensions9.45 × 9.39 × 5.61 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.45 mm9.39 mm3.03 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830683594
Side View
Table 60.0%Crown 32.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 59.6%

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: £1,672 GBP|Low: £246 GBP|High: £1,694 GBP|Avg: £672 GBP|+1.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 5£252 GBP
Retailer 6£292 GBP
Retailer 3£312 GBP
Retailer 12£312 GBP
Retailer 13£351 GBP
Retailer 4£420 GBP
Retailer 11£427 GBP
Retailer 9£493 GBP
Retailer 2£553 GBP
Retailer 14£684 GBP
Retailer 10£729 GBP
Retailer 15£1,004 GBP
Retailer 7£1,015 GBP
Retailer 8£1,248 GBP
Brilliant Earth£1,672 GBP

46 data points across 15 retailers

15 retailers£252 GBP to £1,672 GBP

A
Cheapest Retailer
-
£252 GBP
A
Retailer 2
-
£292 GBP
View
A
Retailer 3
-
£312 GBP
View
Retailer 4
-
£312 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£351 GBP
View
B+
Retailer 6
-
£420 GBP
View
A
Retailer 7
-
£427 GBP
View
A
Retailer 8
-
£493 GBP
View
A
Retailer 9
-
£553 GBP
View
B+
Retailer 10
-
£684 GBP
View
A
Retailer 11
-
£729 GBP
View
B+
Retailer 12
-
£1,004 GBP
View
B
Retailer 13
-
£1,015 GBP
View
B
Retailer 14
-
£1,248 GBP
View
Most Expensive
B
Brilliant Earth
21454713A · Nov 5
£1,672 GBP
$2,250 USD
View
14 more retailers have this diamond
Prices start from £252 GBPSave up to £1,420 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
£252 GBP