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Round|Lab Grown|IGI

3.03ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG726536153

Shape and cutting style on the report: Round brilliant

Certificate IGI LG726536153

Diamond specifications and retailer prices

From £313 GBP
As of November 5, 2026
Save £2,600 GBP (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,913 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 LG726536153 or 726536153. Listed at 23 retailers as of November 5, 2026, with prices from £313 to £2,913, a £2,600 spread on the same certified stone. Brilliant Earth lists it at £2,913. 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 angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726536153
Dimensions9.32 × 9.39 × 5.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.32 mm9.39 mm3.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726536153
Side View
Table 59.0%Crown 34.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £2,913 GBP|Low: £310 GBP|High: £2,913 GBP|Avg: £907 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 19
November 5, 2026
Retailer 9£313 GBP
Retailer 19£350 GBP
Retailer 2£380 GBP
Retailer 5£388 GBP
Retailer 6£388 GBP
Retailer 18£494 GBP
Retailer 4£611 GBP
Retailer 7£612 GBP
Retailer 13£630 GBP
Retailer 15£645 GBP
Retailer 3£706 GBP
Retailer 16£912 GBP
Retailer 14£1,087 GBP
Retailer 10£1,246 GBP
Retailer 11£1,271 GBP
Retailer 17£1,337 GBP
Retailer 8£1,409 GBP
Retailer 12£1,420 GBP
Brilliant Earth£2,913 GBP

41 data points across 19 retailers

23 retailers£313 GBP to £2,913 GBP

Retailer 1
-
£310 GBP
Price last confirmed 45 days ago
A
Retailer 2
-
£313 GBP
View
A
Retailer 3
-
£350 GBP
View
Retailer 4
-
£379 GBP
View
Price last confirmed 45 days ago
A
Retailer 5
-
£380 GBP
View
Final sale: no returns
A
Retailer 6
-
£388 GBP
View
Retailer 7
-
£388 GBP
View
Price last confirmed 12 days ago
A
Retailer 8
-
£494 GBP
View
A
Retailer 9
-
£611 GBP
View
B+
Retailer 10
-
£612 GBP
View
A
Retailer 11
-
£630 GBP
View
A
Retailer 12
-
£645 GBP
View
A
Retailer 13
-
£706 GBP
View
B+
Retailer 14
-
£912 GBP
View
B+
Retailer 15
-
£993 GBP
View
B+
Retailer 16
-
£1,087 GBP
View
Retailer 17
-
£1,234 GBP
View
Price last confirmed 46 days ago
B
Retailer 18
-
£1,246 GBP
View
B
Retailer 19
-
£1,271 GBP
View
Retailer 20
-
£1,337 GBP
View
Price last confirmed 9 days ago
B
Retailer 21
-
£1,409 GBP
View
B
Retailer 22
-
£1,420 GBP
View
Most Expensive
B
Brilliant Earth
17510639A · Nov 5
£2,913 GBP
$3,920 USD
View
22 more retailers have this diamond
Prices start from £313 GBPSave up to £2,600 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
£313 GBP