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Cushion|Lab Grown|IGI

4.05ct D VVS1 Cushion Lab Grown Diamond

EX • D/VVS1 • IGI LG728567933

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG728567933

Diamond specifications and retailer prices

From £964 GBP
$1,291 USD
As of October 31, 2026
Save £4,552 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,515 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG728567933 or 728567933. Listed at 19 retailers as of October 31, 2026, with prices from £964 to £5,515, a £4,552 spread on the same certified stone. Brilliant Earth lists it at £5,515. 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

4.05
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728567933
Dimensions8.59 × 8.59 × 5.76 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.59 mm8.59 mm4.05 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728567933
Side View
Table 61.0%Crown 37.9°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 67.1%

Caratlytics Score

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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: £5,515 GBP|Low: £964 GBP|High: £5,515 GBP|Avg: £2,073 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
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 9£964 GBP
Retailer 5£998 GBP
Retailer 11£1,127 GBP
Retailer 6£1,272 GBP
Retailer 10£1,435 GBP
Retailer 15£1,500 GBP
Retailer 8£1,590 GBP
Retailer 12£1,829 GBP
Retailer 13£2,124 GBP
Retailer 2£2,138 GBP
Retailer 3£2,277 GBP
Retailer 7£2,576 GBP
Retailer 4£2,760 GBP
Retailer 14£3,224 GBP
Brilliant Earth£5,515 GBP

39 data points across 15 retailers

19 retailers£964 GBP to £5,515 GBP

A
Cheapest Retailer
-
£964 GBP
$1,291 USD
Final sale: no returns
Retailer 2
-
£998 GBP
$1,337 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
£1,127 GBP
$1,510 USD
View
A
Retailer 4
-
£1,272 GBP
$1,705 USD
View
A
Retailer 5
-
£1,435 GBP
View
A
Retailer 6
-
£1,500 GBP
$2,010 USD
View
A
Retailer 7
-
£1,590 GBP
€2,029 EUR
View
A
Retailer 8
-
£1,829 GBP
$2,451 USD
View
A
Retailer 9
-
£2,124 GBP
ZAR 45,981 ZAR
View
B+
Retailer 10
-
£2,138 GBP
A$4,407 AUD
View
B+
Retailer 11
-
£2,277 GBP
$3,051 USD
View
B+
Retailer 12
-
£2,576 GBP
$3,451 USD
View
Retailer 13
-
£2,753 GBP
View
Price last confirmed 20 days ago
B+
Retailer 14
-
£2,760 GBP
$3,698 USD
View
B+
Retailer 15
-
£2,889 GBP
$3,871 USD
View
B+
Retailer 16
-
£3,013 GBP
$4,037 USD
View
B+
Retailer 17
-
£3,224 GBP
View
B
Retailer 18
-
£3,493 GBP
$4,681 USD
View
Most Expensive
B
Brilliant Earth
15634959A · Oct 31
£5,515 GBP
$7,390 USD
View
18 more retailers have this diamond
Prices start from £964 GBPSave up to £4,552 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
4.05ct Cushion
£964 GBP