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Round|Lab Grown|IGI

3.03ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG653450581

Shape and cutting style on the report: Round brilliant

Certificate IGI LG653450581

Diamond specifications and retailer prices

From £342 GBP
As of November 4, 2026
Save £955 GBP (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,297 GBP at Rare Carat · As of November 4, 2026
View at Rare Carat

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 LG653450581 or 653450581. Listed at 7 retailers as of November 4, 2026, with prices from £342 to £1,297, a £955 spread on the same certified stone. Rare Carat lists it at £1,297. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG653450581
Dimensions9.35 × 9.37 × 5.73 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.35 mm9.37 mm3.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG653450581
Side View
Table 56.0%Crown 34.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
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 4
Current: £1,297 GBP|Low: £342 GBP|High: £3,098 GBP|Avg: £1,029 GBP|-3.1%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£342 GBP
Retailer 4£497 GBP
Retailer 7£500 GBP
Retailer 2£548 GBP
Retailer 6£684 GBP
Retailer 3£1,236 GBP
Rare Carat£1,297 GBP
Retailer 8£3,098 GBP

9 data points across 8 retailers

7 retailers£342 GBP to £1,297 GBP

A
Cheapest Retailer
-
£342 GBP
Retailer 2
-
£497 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£500 GBP
View
A
Retailer 4
-
£548 GBP
View
A
Retailer 5
-
£684 GBP
View
B
Retailer 6
-
£1,236 GBP
View
Most Expensive
B
Rare Carat
KI5814505KF653 · Nov 4
£1,297 GBP
$1,745 USD
View
6 more retailers have this diamond
Prices start from £342 GBPSave up to £955 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
£342 GBP