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Cushion|Lab Grown|IGI

3.50ct G VS2 Cushion Lab Grown Diamond

ID • G/VS2 • IGI LG595361358

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG595361358

Diamond specifications and retailer prices

From £516 GBP
HK$5,400 HKD
As of October 31, 2026
Save £1,828 GBP (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,343 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG595361358 or 595361358. Listed at 14 retailers as of October 31, 2026, with prices from £516 to £2,343, a £1,828 spread on the same certified stone. Brilliant Earth lists it at £2,343. 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

3.50
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG595361358
Dimensions9.10 × 8.73 × 5.91 mm
L/W Ratio1.04
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
9.10 mm8.73 mm3.50 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG595361358
Side View
Table 61.0%Crown 32.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 67.7%

Caratlytics Score

How it works →
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 31
Current: £2,343 GBP|Low: £322 GBP|High: £2,418 GBP|Avg: £1,076 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 8£322 GBP
Retailer 4£516 GBP
Retailer 9£537 GBP
Retailer 16£578 GBP
Retailer 12£699 GBP
Retailer 6£726 GBP
Retailer 10£730 GBP
Retailer 13£737 GBP
Retailer 14£843 GBP
Retailer 11£1,009 GBP
Retailer 7£1,354 GBP
Retailer 3£1,502 GBP
Retailer 15£1,545 GBP
Retailer 5£1,761 GBP
Retailer 2£1,983 GBP
Brilliant Earth£2,343 GBP

6 data points across 16 retailers

14 retailers£516 GBP to £2,343 GBP

A
Cheapest Retailer
-
£516 GBP
HK$5,400 HKD
A
Retailer 2
-
£537 GBP
View
A
Retailer 3
-
£578 GBP
$775 USD
View
A
Retailer 4
-
£699 GBP
$937 USD
View
A
Retailer 5
-
£730 GBP
View
B+
Retailer 6
-
£737 GBP
$988 USD
View
A
Retailer 7
-
£843 GBP
$1,129 USD
View
A
Retailer 8
-
£1,009 GBP
$1,352 USD
View
B+
Retailer 9
-
£1,502 GBP
SGD 2,719 SGD
View
B+
Retailer 10
-
£1,545 GBP
$2,070 USD
View
B+
Retailer 11
-
£1,627 GBP
$2,180 USD
View
B
Retailer 12
-
£1,761 GBP
$2,360 USD
View
B+
Retailer 13
-
£1,983 GBP
View
Most Expensive
B
Brilliant Earth
17655794A · Oct 31
£2,343 GBP
$3,140 USD
View
13 more retailers have this diamond
Prices start from £516 GBPSave up to £1,828 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
3.50ct Cushion
£516 GBP