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Oval|Lab Grown|IGI

3.07ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG678584138

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG678584138

Diamond specifications and retailer prices

From £456 GBP
As of November 1, 2026
Save £1,218 GBP (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,674 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.07ct lab-grown oval diamond

This 3.07ct lab-grown oval sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678584138 or 678584138. Listed at 16 retailers as of October 31, 2026, with prices from £456 to £1,674, a £1,218 spread on the same certified stone. Brilliant Earth lists it at £1,674. 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

3.07
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678584138
Dimensions12.07 × 8.24 × 5.06 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.07 mm8.24 mm3.07 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678584138
Side View
Table 60.0%Crown 33.8°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,674 GBP|Low: £273 GBP|High: £1,674 GBP|Avg: £712 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
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Retailer 16
November 1, 2026
Retailer 4£273 GBP
Retailer 12£313 GBP
Retailer 3£318 GBP
Retailer 7£368 GBP
Retailer 8£368 GBP
Retailer 15£452 GBP
Retailer 11£456 GBP
Retailer 13£575 GBP
Retailer 2£612 GBP
Retailer 9£637 GBP
Retailer 16£813 GBP
Retailer 10£852 GBP
Retailer 14£1,091 GBP
Retailer 6£1,420 GBP
Retailer 5£1,437 GBP
Brilliant Earth£1,674 GBP

41 data points across 16 retailers

16 retailers£456 GBP to £1,674 GBP

Retailer 1
-
£273 GBP
Price last confirmed 10 days ago
Retailer 2
-
£318 GBP
View
Price last confirmed 10 days ago
Retailer 3
-
£368 GBP
View
Price last confirmed 12 days ago
Retailer 4
-
£368 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
£452 GBP
View
Price last confirmed 4 days ago
B+
Retailer 6
-
£456 GBP
View
A
Retailer 7
-
£575 GBP
View
A
Retailer 8
-
£612 GBP
View
A
Retailer 9
-
£637 GBP
View
B+
Retailer 10
-
£813 GBP
View
B+
Retailer 11
-
£852 GBP
View
Retailer 12
-
£1,091 GBP
View
Price last confirmed 9 days ago
Retailer 13
-
£1,420 GBP
View
Price last confirmed 16 days ago
Retailer 14
-
£1,437 GBP
View
Price last confirmed 11 days ago
Retailer 15
-
£1,674 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
17470963A · Oct 31
£1,674 GBP
$2,240 USD
View
15 more retailers have this diamond
Prices start from £456 GBPSave up to £1,218 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
3.07ct Oval
£456 GBP