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Cushion|Lab Grown|IGI

4.00ct G VVS2 Cushion Lab Grown Diamond

VG • G/VVS2 • IGI LG831605978

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG831605978

Diamond specifications and retailer prices

From £855 GBP
$1,146 USD
As of October 30, 2026
Save £2,152 GBP (72%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,008 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4ct lab-grown cushion diamond

This 4ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831605978 or 831605978. Listed at 12 retailers as of October 29, 2026, with prices from £855 to £3,008, a £2,152 spread on the same certified stone. Brilliant Earth lists it at £3,008. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.00
Carat
G
Colour
VVS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831605978
Dimensions9.61 × 9.21 × 5.83 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.61 mm9.21 mm4.00 ctG / VVS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831605978
Side View
Table 66.0%Crown 39°Girdle: THK-VTKPavilion 40.3°Culet: NoneDepth 63.3%

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: £3,008 GBP|Low: £579 GBP|High: £3,097 GBP|Avg: £1,521 GBP|-2.9%
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 10£579 GBP
Retailer 11£855 GBP
Retailer 5£886 GBP
Retailer 9£887 GBP
Retailer 2£907 GBP
Retailer 12£1,128 GBP
Retailer 7£1,153 GBP
Retailer 8£1,746 GBP
Retailer 4£1,870 GBP
Retailer 6£2,294 GBP
Retailer 3£2,611 GBP
Brilliant Earth£3,008 GBP

41 data points across 12 retailers

12 retailers£855 GBP to £3,008 GBP

Retailer 1
-
£579 GBP
$776 USD
Price last confirmed 14 days ago
B+
Retailer 2
-
£855 GBP
$1,146 USD
View
A
Retailer 3
-
£886 GBP
€1,130 EUR
View
B+
Retailer 4
-
£887 GBP
$1,188 USD
View
A
Retailer 5
-
£907 GBP
View
B+
Retailer 6
-
£1,128 GBP
$1,512 USD
View
A
Retailer 7
-
£1,153 GBP
ZAR 24,957 ZAR
View
B+
Retailer 8
-
£1,746 GBP
$2,339 USD
View
B
Retailer 9
-
£1,870 GBP
$2,506 USD
View
B
Retailer 10
-
£2,294 GBP
View
B
Retailer 11
-
£2,664 GBP
$3,570 USD
View
Most Expensive
B
Brilliant Earth
21395819A · Oct 29
£3,008 GBP
$4,030 USD
View
11 more retailers have this diamond
Prices start from £855 GBPSave up to £2,152 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
4.00ct Cushion
£855 GBP