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Oval|Lab Grown|IGI

3.09ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG746503745

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG746503745

Diamond specifications and retailer prices

From £349 GBP
$468 USD
As of October 29, 2026
Save £2,293 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,642 GBP at Brilliant Earth · As of October 30, 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 LG746503745 or 746503745. Listed at 19 retailers as of October 29, 2026, with prices from £349 to £2,642, a £2,293 spread on the same certified stone. Brilliant Earth lists it at £2,642. 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 angle37.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG746503745
Dimensions11.71 × 8.18 × 5.13 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.71 mm8.18 mm3.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG746503745
Side View
Table 61.0%Crown 37.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.7%

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: Oct 29
Current: £2,642 GBP|Low: £326 GBP|High: £2,642 GBP|Avg: £878 GBP|+4.1%
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
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 18£349 GBP
Retailer 10£380 GBP
Retailer 8£421 GBP
Retailer 3£496 GBP
Retailer 6£526 GBP
Retailer 13£592 GBP
Retailer 7£651 GBP
Retailer 14£676 GBP
Retailer 12£712 GBP
Retailer 16£718 GBP
Retailer 5£930 GBP
Retailer 11£1,022 GBP
Retailer 2£1,190 GBP
Retailer 9£1,353 GBP
Retailer 17£1,414 GBP
Retailer 15£1,529 GBP
Retailer 4£1,554 GBP
Brilliant Earth£2,642 GBP

39 data points across 18 retailers

19 retailers£349 GBP to £2,642 GBP

A
Cheapest Retailer
-
£349 GBP
$468 USD
A
Retailer 2
-
£380 GBP
$509 USD
View
A
Retailer 3
-
£421 GBP
$564 USD
View
Retailer 4
-
£421 GBP
$564 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
£496 GBP
$664 USD
View
Final sale: no returns
A
Retailer 6
-
£526 GBP
$705 USD
View
A
Retailer 7
-
£592 GBP
View
A
Retailer 8
-
£651 GBP
€831 EUR
View
B+
Retailer 9
-
£676 GBP
$906 USD
View
A
Retailer 10
-
£712 GBP
$954 USD
View
A
Retailer 11
-
£718 GBP
View
B+
Retailer 12
-
£930 GBP
A$1,918 AUD
View
B+
Retailer 13
-
£1,022 GBP
$1,370 USD
View
B
Retailer 14
-
£1,190 GBP
$1,595 USD
View
B
Retailer 15
-
£1,353 GBP
$1,813 USD
View
B
Retailer 16
-
£1,414 GBP
$1,895 USD
View
B
Retailer 17
-
£1,529 GBP
$2,049 USD
View
B
Retailer 18
-
£1,554 GBP
View
Most Expensive
B
Brilliant Earth
16605189A · Oct 30
£2,642 GBP
$3,540 USD
View
18 more retailers have this diamond
Prices start from £349 GBPSave up to £2,293 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
£349 GBP