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Cushion|Lab Grown|IGI

3.40ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG735540639

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG735540639

Diamond specifications and retailer prices

From £602 GBP
$806 USD
As of October 29, 2026
Save £3,100 GBP (84%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,919 GBP at Rare Carat · As of August 4, 2026
View at Rare Carat

About this 3.4ct lab-grown cushion diamond

This 3.4ct 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 LG735540639 or 735540639. Listed at 24 retailers as of October 29, 2026, with a 515% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.40
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735540639
Dimensions10.86 × 7.05 × 5.04 mm
L/W Ratio1.54
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.86 mm7.05 mm3.40 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735540639
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 37.4°Culet: NoneDepth 71.5%

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 29
Current: £1,409 GBP|Low: £602 GBP|High: £6,695 GBP|Avg: £1,790 GBP|-5.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
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Retailer 22
October 31, 2026
Retailer 5£602 GBP
Retailer 6£624 GBP
Retailer 22£726 GBP
Retailer 21£739 GBP
Retailer 8£859 GBP
Retailer 2£894 GBP
Retailer 18£997 GBP
Retailer 17£1,001 GBP
Retailer 12£1,317 GBP
Retailer 1£1,409 GBP
Retailer 20£1,449 GBP
Retailer 11£1,507 GBP
Retailer 4£1,658 GBP
Retailer 13£1,945 GBP
Retailer 10£2,101 GBP
Retailer 7£2,131 GBP
Retailer 9£2,140 GBP
Retailer 14£2,151 GBP
Retailer 15£2,240 GBP
Retailer 19£2,463 GBP
Retailer 3£2,860 GBP
Retailer 16£3,702 GBP

32 data points across 22 retailers

24 retailers£602 GBP to £3,702 GBP

A
Cheapest Retailer
-
£602 GBP
$806 USD
Final sale: no returns
Retailer 2
-
£624 GBP
$836 USD
View
Price last confirmed 14 days ago
A
Retailer 3
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£726 GBP
HK$7,600 HKD
View
A
Retailer 4
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£739 GBP
$990 USD
View
A
Retailer 5
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£859 GBP
$1,151 USD
View
A
Retailer 6
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£894 GBP
$1,198 USD
View
A
Retailer 7
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£997 GBP
€1,272 EUR
View
A
Retailer 8
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£1,001 GBP
View
A
Retailer 9
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£1,317 GBP
$1,765 USD
View
A
Retailer 10
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£1,409 GBP
A$2,905 AUD
View
A
Retailer 11
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£1,449 GBP
ZAR 31,363 ZAR
View
A
Retailer 12
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£1,507 GBP
$2,020 USD
View
B+
Retailer 13
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£1,658 GBP
$2,221 USD
View
B+
Retailer 14
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£1,945 GBP
View
B+
Retailer 15
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£2,036 GBP
$2,728 USD
View
B+
Retailer 16
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£2,101 GBP
SGD 3,804 SGD
View
B+
Retailer 17
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£2,131 GBP
$2,856 USD
View
B+
Retailer 18
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£2,140 GBP
$2,868 USD
View
B+
Retailer 19
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£2,151 GBP
$2,882 USD
View
B+
Retailer 20
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£2,226 GBP
$2,983 USD
View
B+
Retailer 21
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£2,463 GBP
View
Retailer 22
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£2,860 GBP
A$5,896 AUD
View
Price last confirmed 26 days ago
B
Retailer 23
-
£3,702 GBP
$4,960 USD
View
Most Expensive
Rare Carat
JV6395406JF735 · Aug 4
£3,919 GBP
$5,251 USD
View
Price last confirmed 88 days ago
23 more retailers have this diamond
Prices start from £602 GBPSave up to £3,100 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
3.40ct Cushion
£602 GBP