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Cushion|Lab Grown|IGI

3.50ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG718501507

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG718501507

Diamond specifications and retailer prices

From £812 GBP
HK$8,500 HKD
As of October 30, 2026
Save £5,883 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,695 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG718501507 or 718501507. Listed at 19 retailers as of October 26, 2026, with prices from £812 to £6,695, a £5,883 spread on the same certified stone. Brilliant Earth lists it at £6,695. 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

3.50
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle29.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG718501507
Dimensions10.12 × 7.53 × 4.85 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.12 mm7.53 mm3.50 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG718501507
Side View
Table 68.0%Crown 39.8°Girdle: STK-VTKPavilion 29.7°Culet: NoneDepth 64.4%

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 30
Current: £6,695 GBP|Low: £676 GBP|High: £6,695 GBP|Avg: £1,902 GBP
Brilliant Earth
Retailer 2
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October 27, 2026
Retailer 6£701 GBP
Retailer 18£723 GBP
Retailer 16£812 GBP
Retailer 4£843 GBP
Retailer 9£935 GBP
Retailer 5£1,004 GBP
Retailer 13£1,070 GBP
Retailer 2£1,098 GBP
Retailer 20£1,464 GBP
Retailer 19£1,582 GBP
Retailer 15£1,613 GBP
Retailer 8£1,770 GBP
Retailer 7£1,934 GBP
Retailer 17£2,194 GBP
Retailer 10£2,343 GBP
Retailer 11£2,357 GBP
Retailer 12£2,426 GBP
Retailer 14£2,632 GBP
Retailer 3£3,071 GBP
Brilliant Earth£6,695 GBP

30 data points across 20 retailers

19 retailers£812 GBP to £6,695 GBP

Retailer 1
-
£701 GBP
$939 USD
Price last confirmed 19 days ago
A
Retailer 2
-
£812 GBP
HK$8,500 HKD
View
A
Retailer 3
-
£843 GBP
$1,130 USD
View
A
Retailer 4
-
£935 GBP
$1,253 USD
View
A
Retailer 5
-
£1,004 GBP
$1,345 USD
View
A
Retailer 6
-
£1,070 GBP
View
Retailer 7
-
£1,097 GBP
View
Price last confirmed 18 days ago
A
Retailer 8
-
£1,098 GBP
€1,401 EUR
View
A
Retailer 9
-
£1,464 GBP
$1,962 USD
View
Retailer 10
-
£1,582 GBP
A$3,261 AUD
View
Price last confirmed 10 days ago
Retailer 11
-
£1,613 GBP
ZAR 34,911 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 12
-
£1,770 GBP
$2,371 USD
View
Retailer 13
-
£1,934 GBP
View
Price last confirmed 19 days ago
B+
Retailer 14
-
£2,194 GBP
$2,940 USD
View
Retailer 15
-
£2,343 GBP
$3,140 USD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
£2,357 GBP
SGD 4,267 SGD
View
B+
Retailer 17
-
£2,426 GBP
$3,251 USD
View
B+
Retailer 18
-
£2,632 GBP
View
Most Expensive
B
Brilliant Earth
15239275A · Oct 26
£6,695 GBP
$8,970 USD
View
18 more retailers have this diamond
Prices start from £812 GBPSave up to £5,883 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
3.50ct Cushion
£812 GBP