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Cushion|Lab Grown|IGI

3.09ct D VS2 Cushion Lab Grown Diamond

ID • D/VS2 • IGI LG647423337

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG647423337

Diamond specifications and retailer prices

From £534 GBP
$715 USD
As of October 29, 2026
Save £3,683 GBP (87%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,217 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG647423337 or 647423337. Listed at 8 retailers as of October 29, 2026, with prices from £534 to £4,217, a £3,683 spread on the same certified stone. Brilliant Earth lists it at £4,217. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.09
Carat
D
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647423337
Dimensions8.60 × 8.47 × 5.70 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.60 mm8.47 mm3.09 ctD / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647423337
Side View
Table 59.0%Crown 35.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £4,217 GBP|Low: £534 GBP|High: £4,351 GBP|Avg: £1,656 GBP|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 19, 2026
Retailer 5£534 GBP
Retailer 3£642 GBP
Retailer 8£764 GBP
Retailer 7£791 GBP
Retailer 4£1,788 GBP
Retailer 2£1,832 GBP
Retailer 6£2,205 GBP
Brilliant Earth£4,217 GBP

9 data points across 8 retailers

8 retailers£534 GBP to £4,217 GBP

A
Cheapest Retailer
-
£534 GBP
$715 USD
Final sale: no returns
A
Retailer 2
-
£642 GBP
$860 USD
View
A
Retailer 3
-
£764 GBP
HK$8,000 HKD
View
A
Retailer 4
-
£791 GBP
$1,060 USD
View
Retailer 5
-
£1,788 GBP
A$3,685 AUD
View
Price last confirmed 22 days ago
Retailer 6
-
£1,832 GBP
$2,455 USD
View
Price last confirmed 9 days ago
B
Retailer 7
-
£2,205 GBP
SGD 3,992 SGD
View
Most Expensive
B
Brilliant Earth
14886529Y · Oct 29
£4,217 GBP
$5,650 USD
View
7 more retailers have this diamond
Prices start from £534 GBPSave up to £3,683 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 Cushion
£534 GBP