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Cushion|Lab Grown|IGI

3.51ct G VS2 Cushion Lab Grown Diamond

ID • G/VS2 • IGI LG591300255

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591300255

Diamond specifications and retailer prices

From £1,379 GBP
$1,848 USD
As of November 1, 2026
8 retailers carry this diamond
Most expensive: £3,791 GBP at Brilliant Earth · As of October 6, 2026
View at Brilliant Earth

About this 3.51ct lab-grown cushion diamond

This 3.51ct 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 LG591300255 or 591300255. Listed at 8 retailers as of November 1, 2026. 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

3.51
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591300255
Dimensions9.21 × 8.72 × 5.71 mm
L/W Ratio1.06
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
9.21 mm8.72 mm3.51 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591300255
Side View
Table 66.0%Crown 32.2°Girdle: MediumPavilion 39.9°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,791 GBP|Low: £269 GBP|High: £3,911 GBP|Avg: £1,224 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
October 13, 2026
Retailer 3£377 GBP
Retailer 16£418 GBP
Retailer 15£526 GBP
Retailer 14£561 GBP
Retailer 2£667 GBP
Retailer 10£690 GBP
Retailer 6£831 GBP
Retailer 5£922 GBP
Retailer 4£1,217 GBP
Retailer 8£1,368 GBP
Retailer 9£1,379 GBP
Retailer 7£1,491 GBP
Retailer 12£1,554 GBP
Retailer 13£1,565 GBP
Retailer 11£1,679 GBP
Brilliant Earth£3,791 GBP

21 data points across 16 retailers

8 retailers

Retailer 1
-
£1,146 GBP
HK$12,000 HKD
Price last confirmed 26 days ago
Retailer 2
-
£1,217 GBP
View
Price last confirmed 27 days ago
Retailer 3
-
£1,368 GBP
$1,833 USD
View
Price last confirmed 27 days ago
B+
Retailer 4
-
£1,379 GBP
$1,848 USD
View
Retailer 5
-
£1,554 GBP
View
Price last confirmed 28 days ago
Retailer 6
-
£1,565 GBP
$2,097 USD
View
Price last confirmed 27 days ago
Retailer 7
-
£1,679 GBP
$2,250 USD
View
Price last confirmed 27 days ago
Most Expensive
Brilliant Earth
16038360A · Oct 6
£3,791 GBP
$5,080 USD
View
Price last confirmed 26 days ago
7 more retailers have this diamond
Prices start from £1,379 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.

B+
3.51ct Cushion
£1,379 GBP