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Cushion|Lab Grown|IGI

3.05ct D VS2 Cushion Lab Grown Diamond

EX • D/VS2 • IGI LG780604982

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

Certificate IGI LG780604982

Diamond specifications and retailer prices

From £403 GBP
$537 USD
As of October 25, 2026
Save £3,817 GBP (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,220 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG780604982 or 780604982. Listed at 13 retailers as of October 25, 2026, with prices from £403 to £4,220, a £3,817 spread on the same certified stone. Brilliant Earth lists it at £4,220. 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

3.05
Carat
D
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780604982
Dimensions8.38 × 8.29 × 5.69 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.38 mm8.29 mm3.05 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780604982
Side View
Table 63.0%Crown 36.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 68.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: £4,220 GBP|Low: £403 GBP|High: £4,348 GBP|Avg: £1,237 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
Retailer 13
Retailer 14
October 30, 2026
Retailer 12£403 GBP
Retailer 11£530 GBP
Retailer 9£608 GBP
Retailer 14£635 GBP
Retailer 7£662 GBP
Retailer 2£666 GBP
Retailer 3£686 GBP
Retailer 4£943 GBP
Retailer 6£1,087 GBP
Retailer 5£1,321 GBP
Retailer 8£1,490 GBP
Retailer 13£1,509 GBP
Retailer 10£1,855 GBP
Brilliant Earth£4,220 GBP

36 data points across 14 retailers

13 retailers£403 GBP to £4,220 GBP

A
Cheapest Retailer
-
£403 GBP
$537 USD
Retailer 2
-
£530 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£608 GBP
$810 USD
View
B+
Retailer 4
-
£635 GBP
$846 USD
View
A
Retailer 5
-
£662 GBP
€839 EUR
View
A
Retailer 6
-
£666 GBP
View
A
Retailer 7
-
£686 GBP
$913 USD
View
A
Retailer 8
-
£943 GBP
$1,256 USD
View
Retailer 9
-
£1,321 GBP
$1,759 USD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
£1,490 GBP
View
B+
Retailer 11
-
£1,509 GBP
$2,010 USD
View
Retailer 12
-
£1,855 GBP
$2,470 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
17991407A · Oct 28
£4,220 GBP
$5,620 USD
View
12 more retailers have this diamond
Prices start from £403 GBPSave up to £3,817 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
3.05ct Cushion
£403 GBP