Cushion|Lab Grown|IGI

3.09ct D VS2 Cushion Lab Grown Diamond

EX • D/VS2 • IGI LG813653424

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG813653424

Diamond specifications and retailer prices

From £585 GBP
$779 USD
As of October 30, 2026
Save £3,658 GBP (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,243 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 LG813653424 or 813653424. Listed at 10 retailers as of October 29, 2026, with prices from £585 to £4,243, a £3,658 spread on the same certified stone. Brilliant Earth lists it at £4,243. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813653424
Dimensions9.88 × 7.69 × 5.19 mm
L/W Ratio1.28
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.88 mm7.69 mm3.09 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813653424
Side View
Table 62.0%Crown 35.6°Girdle: MED-THKPavilion 36.1°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £4,243 GBP|Low: £541 GBP|High: £4,378 GBP|Avg: £1,397 GBP|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 11£585 GBP
Retailer 9£600 GBP
Retailer 6£601 GBP
Retailer 2£655 GBP
Retailer 5£732 GBP
Retailer 4£740 GBP
Retailer 10£770 GBP
Retailer 3£1,417 GBP
Retailer 12£1,713 GBP
Retailer 7£2,088 GBP
Retailer 8£3,244 GBP
Brilliant Earth£4,243 GBP

23 data points across 12 retailers

10 retailers£585 GBP to £4,243 GBP

A
Cheapest Retailer
-
£585 GBP
$779 USD
B+
Retailer 2
-
£600 GBP
$799 USD
View
A
Retailer 3
-
£601 GBP
$800 USD
View
A
Retailer 4
-
£655 GBP
View
A
Retailer 5
-
£732 GBP
€928 EUR
View
A
Retailer 6
-
£770 GBP
$1,025 USD
View
Retailer 7
-
£1,713 GBP
A$3,509 AUD
View
Price last confirmed 21 days ago
B
Retailer 8
-
£2,088 GBP
View
B
Retailer 9
-
£3,244 GBP
$4,320 USD
View
Most Expensive
B
Brilliant Earth
21652539A · Oct 29
£4,243 GBP
$5,650 USD
View
9 more retailers have this diamond
Prices start from £585 GBPSave up to £3,658 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
£585 GBP