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Oval|Lab Grown|IGI

3.03ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG678584112

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG678584112

Diamond specifications and retailer prices

From £315 GBP
As of November 6, 2026
Save £2,973 GBP (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,287 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.03ct lab-grown oval diamond

This 3.03ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678584112 or 678584112. Listed at 16 retailers as of November 6, 2026, with prices from £315 to £3,287, a £2,973 spread on the same certified stone. Brilliant Earth lists it at £3,287. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31°
Pavilion angle42.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678584112
Dimensions11.60 × 8.26 × 5.19 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.60 mm8.26 mm3.03 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678584112
Side View
Table 60.0%Crown 31°Girdle: MED-STKPavilion 42.6°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £3,287 GBP|Low: £315 GBP|High: £3,287 GBP|Avg: £881 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
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 7£315 GBP
Retailer 6£353 GBP
Retailer 12£364 GBP
Retailer 13£390 GBP
Retailer 4£501 GBP
Retailer 15£524 GBP
Retailer 14£616 GBP
Retailer 8£637 GBP
Retailer 2£652 GBP
Retailer 5£770 GBP
Retailer 11£947 GBP
Retailer 3£1,255 GBP
Retailer 10£1,390 GBP
Retailer 9£1,429 GBP
Brilliant Earth£3,287 GBP

46 data points across 15 retailers

16 retailers£315 GBP to £3,287 GBP

A
Cheapest Retailer
-
£315 GBP
A
Retailer 2
-
£353 GBP
View
A
Retailer 3
-
£364 GBP
View
Final sale: no returns
A
Retailer 4
-
£390 GBP
View
Retailer 5
-
£407 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£501 GBP
View
B+
Retailer 7
-
£524 GBP
View
A
Retailer 8
-
£616 GBP
View
A
Retailer 9
-
£637 GBP
View
A
Retailer 10
-
£652 GBP
View
A
Retailer 11
-
£770 GBP
View
B+
Retailer 12
-
£947 GBP
View
B+
Retailer 13
-
£1,255 GBP
View
B+
Retailer 14
-
£1,390 GBP
View
B+
Retailer 15
-
£1,429 GBP
View
Most Expensive
B
Brilliant Earth
17470454A · Nov 6
£3,287 GBP
$4,400 USD
View
15 more retailers have this diamond
Prices start from £315 GBPSave up to £2,973 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 Oval
£315 GBP