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Oval|Lab Grown|IGI

3.09ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG709530337

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG709530337

Diamond specifications and retailer prices

From £271 GBP
$361 USD
As of October 29, 2026
Save £899 GBP (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,170 GBP at Adiamor · As of October 30, 2026
View at Adiamor

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 LG709530337 or 709530337. Listed at 11 retailers as of October 29, 2026, with prices from £271 to £1,170, a £899 spread on the same certified stone. Adiamor lists it at £1,170. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG709530337
Dimensions12.08 × 8.14 × 5.08 mm
L/W Ratio1.48
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.08 mm8.14 mm3.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG709530337
Side View
Table 59.0%Crown 35.2°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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,170 GBP|Low: £271 GBP|High: £4,153 GBP|Avg: £1,030 GBP|+1.3%
Adiamor
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
October 30, 2026
Retailer 8£271 GBP
Retailer 4£314 GBP
Retailer 10£336 GBP
Retailer 12£375 GBP
Retailer 9£451 GBP
Retailer 2£459 GBP
Retailer 14£537 GBP
Retailer 11£574 GBP
Retailer 7£605 GBP
Retailer 6£745 GBP
Retailer 3£1,079 GBP
Adiamor£1,170 GBP
Retailer 13£1,543 GBP
Retailer 5£4,153 GBP

4 data points across 14 retailers

11 retailers£271 GBP to £1,170 GBP

A
Cheapest Retailer
-
£271 GBP
$361 USD
A
Retailer 2
-
£314 GBP
$418 USD
View
A
Retailer 3
-
£336 GBP
$447 USD
View
A
Retailer 4
-
£375 GBP
HK$3,900 HKD
View
A
Retailer 5
-
£451 GBP
$600 USD
View
A
Retailer 6
-
£459 GBP
View
B+
Retailer 7
-
£537 GBP
$715 USD
View
A
Retailer 8
-
£574 GBP
$764 USD
View
A
Retailer 9
-
£605 GBP
View
B+
Retailer 10
-
£1,079 GBP
$1,437 USD
View
Most Expensive
B
Adiamor
D-82829006 · Oct 30
£1,170 GBP
$1,558 USD
View
10 more retailers have this diamond
Prices start from £271 GBPSave up to £899 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
£271 GBP