CaratHunter
Plans
Cushion|Lab Grown|IGI

3.09ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG582360738

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG582360738

Diamond specifications and retailer prices

From £374 GBP
$501 USD
As of November 3, 2026
Save £3,235 GBP (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,609 GBP at Brilliant Earth · As of November 3, 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG582360738 or 582360738. Listed at 13 retailers as of November 3, 2026, with prices from £374 to £3,609, a £3,235 spread on the same certified stone. Brilliant Earth lists it at £3,609. 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
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG582360738
Dimensions8.38 × 8.34 × 5.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.38 mm8.34 mm3.09 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG582360738
Side View
Table 61.0%Crown 34.8°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 63.7%

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: Nov 3
Current: £3,609 GBP|Low: £374 GBP|High: £3,609 GBP|Avg: £911 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 4£374 GBP
Retailer 9£461 GBP
Retailer 5£522 GBP
Retailer 11£637 GBP
Retailer 3£638 GBP
Retailer 12£649 GBP
Retailer 2£685 GBP
Retailer 10£809 GBP
Retailer 8£902 GBP
Retailer 7£992 GBP
Retailer 6£1,521 GBP
Brilliant Earth£3,609 GBP

29 data points across 12 retailers

13 retailers£374 GBP to £3,609 GBP

A
Cheapest Retailer
-
£374 GBP
$501 USD
Final sale: no returns
A
Retailer 2
-
£461 GBP
View
A
Retailer 3
-
£522 GBP
$700 USD
View
A
Retailer 4
-
£637 GBP
€813 EUR
View
B+
Retailer 5
-
£649 GBP
$871 USD
View
A
Retailer 6
-
£685 GBP
View
A
Retailer 7
-
£809 GBP
$1,085 USD
View
A
Retailer 8
-
£902 GBP
ZAR 19,541 ZAR
View
A
Retailer 9
-
£992 GBP
$1,330 USD
View
B+
Retailer 10
-
£1,355 GBP
$1,817 USD
View
B+
Retailer 11
-
£1,480 GBP
$1,984 USD
View
B+
Retailer 12
-
£1,521 GBP
View
Most Expensive
B
Brilliant Earth
14086535A · Nov 3
£3,609 GBP
$4,840 USD
View
12 more retailers have this diamond
Prices start from £374 GBPSave up to £3,235 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
£374 GBP