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Round|Lab Grown|IGI

3.03ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG756552842

Shape and cutting style on the report: Round brilliant

Certificate IGI LG756552842

Diamond specifications and retailer prices

From £250 GBP
As of November 5, 2026
Save £1,047 GBP (81%) vs most expensive(unlock to see where)
15 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 LG756552842 or 756552842. Listed at 15 retailers as of November 4, 2026, with prices from £250 to £1,297, a £1,047 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 angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756552842
Dimensions9.30 × 9.33 × 5.68 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
9.30 mm9.33 mm3.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756552842
Side View
Table 58.0%Crown 34.3°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

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: £1,297 GBP|Low: £250 GBP|High: £3,232 GBP|Avg: £799 GBP|-23.4%
Rare Carat
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
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Retailer 16
November 6, 2026
Retailer 12£250 GBP
Retailer 7£290 GBP
Retailer 6£310 GBP
Retailer 16£342 GBP
Retailer 9£410 GBP
Retailer 13£424 GBP
Retailer 14£497 GBP
Retailer 4£500 GBP
Retailer 15£545 GBP
Retailer 2£548 GBP
Retailer 3£684 GBP
Retailer 11£908 GBP
Retailer 5£995 GBP
Retailer 10£1,239 GBP
Rare Carat£1,297 GBP
Retailer 8£3,232 GBP

10 data points across 16 retailers

15 retailers£250 GBP to £1,297 GBP

A
Cheapest Retailer
-
£250 GBP
A
Retailer 2
-
£290 GBP
View
A
Retailer 3
-
£310 GBP
View
A
Retailer 4
-
£342 GBP
View
A
Retailer 5
-
£410 GBP
View
A
Retailer 6
-
£424 GBP
View
Retailer 7
-
£497 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£500 GBP
View
A
Retailer 9
-
£545 GBP
View
A
Retailer 10
-
£548 GBP
View
A
Retailer 11
-
£684 GBP
View
B+
Retailer 12
-
£908 GBP
View
B+
Retailer 13
-
£995 GBP
View
B
Retailer 14
-
£1,239 GBP
View
Most Expensive
B
Rare Carat
KI8425528KF756 · Nov 4
£1,297 GBP
$1,745 USD
View
14 more retailers have this diamond
Prices start from £250 GBPSave up to £1,047 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
£250 GBP