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Radiant|Lab Grown|IGI

3.03ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG841643745

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG841643745

Diamond specifications and retailer prices

From £252 GBP
As of November 6, 2026
Save £3,170 GBP (93%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,422 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3.03ct lab-grown radiant diamond

This 3.03ct lab-grown radiant 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 LG841643745 or 841643745. Listed at 13 retailers as of November 5, 2026, with prices from £252 to £3,422, a £3,170 spread on the same certified stone. Brilliant Earth lists it at £3,422. 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 angle46.8°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841643745
Dimensions9.88 × 7.21 × 4.81 mm
L/W Ratio1.37
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.88 mm7.21 mm3.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841643745
Side View
Table 64.0%Crown 46.8°Girdle: ThickPavilion 33.8°Culet: NoneDepth 66.7%

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 6
Current: £3,422 GBP|Low: £252 GBP|High: £3,422 GBP|Avg: £970 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3£252 GBP
Retailer 4£262 GBP
Retailer 5£341 GBP
Retailer 12£377 GBP
Retailer 9£396 GBP
Retailer 6£492 GBP
Retailer 2£551 GBP
Retailer 11£722 GBP
Retailer 10£736 GBP
Retailer 8£935 GBP
Retailer 7£1,119 GBP
Brilliant Earth£3,422 GBP

38 data points across 12 retailers

13 retailers£252 GBP to £3,422 GBP

A
Cheapest Retailer
-
£252 GBP
Final sale: no returns
A
Retailer 2
-
£262 GBP
View
A
Retailer 3
-
£341 GBP
View
B+
Retailer 4
-
£377 GBP
View
A
Retailer 5
-
£396 GBP
View
A
Retailer 6
-
£492 GBP
View
A
Retailer 7
-
£551 GBP
View
A
Retailer 8
-
£722 GBP
View
A
Retailer 9
-
£736 GBP
View
B+
Retailer 10
-
£935 GBP
View
B+
Retailer 11
-
£1,119 GBP
View
Retailer 12
-
£1,547 GBP
View
Price last confirmed 38 days ago
Most Expensive
B
Brilliant Earth
21666320A · Nov 5
£3,422 GBP
$4,580 USD
View
12 more retailers have this diamond
Prices start from £252 GBPSave up to £3,170 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 Radiant
£252 GBP