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Cushion|Lab Grown|IGI

4.15ct E VS2 Cushion Lab Grown Diamond

ID • E/VS2 • IGI LG678564258

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG678564258

Diamond specifications and retailer prices

From £640 GBP
$858 USD
As of October 29, 2026
Save £3,509 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,150 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.15ct lab-grown cushion diamond

This 4.15ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG678564258 or 678564258. Listed at 12 retailers as of October 29, 2026, with prices from £640 to £4,150, a £3,509 spread on the same certified stone. Brilliant Earth lists it at £4,150. 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

4.15
Carat
E
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678564258
Dimensions10.81 × 8.69 × 5.70 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.81 mm8.69 mm4.15 ctE / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678564258
Side View
Table 64.0%Crown 34.3°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 65.6%

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 29
Current: £4,150 GBP|Low: £457 GBP|High: £5,120 GBP|Avg: £1,879 GBP|-1.6%
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 31, 2026
Retailer 13£640 GBP
Retailer 12£664 GBP
Retailer 7£795 GBP
Retailer 2£1,018 GBP
Retailer 8£1,064 GBP
Retailer 11£1,074 GBP
Retailer 4£1,297 GBP
Retailer 10£2,059 GBP
Retailer 14£2,137 GBP
Retailer 6£2,252 GBP
Retailer 3£2,293 GBP
Retailer 9£2,493 GBP
Brilliant Earth£4,150 GBP
Retailer 5£5,120 GBP

42 data points across 14 retailers

12 retailers£640 GBP to £4,150 GBP

A
Cheapest Retailer
-
£640 GBP
$858 USD
Final sale: no returns
Retailer 2
-
£664 GBP
$890 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
£795 GBP
$1,065 USD
View
A
Retailer 4
-
£1,018 GBP
View
A
Retailer 5
-
£1,064 GBP
€1,358 EUR
View
A
Retailer 6
-
£1,074 GBP
$1,439 USD
View
A
Retailer 7
-
£1,297 GBP
$1,738 USD
View
B+
Retailer 8
-
£2,059 GBP
View
B+
Retailer 9
-
£2,137 GBP
$2,864 USD
View
B+
Retailer 10
-
£2,293 GBP
$3,073 USD
View
B+
Retailer 11
-
£2,493 GBP
View
Most Expensive
B
Brilliant Earth
13097430A · Oct 30
£4,150 GBP
$5,560 USD
View
11 more retailers have this diamond
Prices start from £640 GBPSave up to £3,509 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
4.15ct Cushion
£640 GBP