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Oval|Lab Grown|IGI

3.09ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG813621208

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG813621208

Diamond specifications and retailer prices

From £312 GBP
$418 USD
As of October 29, 2026
Save £1,778 GBP (85%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,090 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.09ct lab-grown oval diamond

This 3.09ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG813621208 or 813621208. Listed at 4 retailers as of October 29, 2026, with prices from £312 to £2,090, a £1,778 spread on the same certified stone. Brilliant Earth lists it at £2,090. 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

3.09
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813621208
Dimensions11.85 × 8.14 × 5.08 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.85 mm8.14 mm3.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813621208
Side View
Table 61.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £2,090 GBP|Low: £305 GBP|High: £2,090 GBP|Avg: £875 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 3£312 GBP
Retailer 5£515 GBP
Retailer 6£525 GBP
Retailer 2£651 GBP
Retailer 4£915 GBP
Retailer 7£1,164 GBP
Brilliant Earth£2,090 GBP

39 data points across 7 retailers

4 retailers£312 GBP to £2,090 GBP

A
Cheapest Retailer
-
£312 GBP
$418 USD
Final sale: no returns
A
Retailer 2
-
£651 GBP
View
Retailer 3
-
£915 GBP
$1,226 USD
View
Price last confirmed 44 days ago
Most Expensive
B
Brilliant Earth
21226399A · Oct 29
£2,090 GBP
$2,800 USD
View
3 more retailers have this diamond
Prices start from £312 GBPSave up to £1,778 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
3.09ct Oval
£312 GBP