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Cushion|Lab Grown|IGI

1.40ct E VVS1 Cushion Lab Grown Diamond

VG • E/VVS1 • IGI LG840629708

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840629708

Diamond specifications and retailer prices

From £192 GBP
$257 USD
As of October 30, 2026
Save £1,175 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,367 GBP at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.4ct lab-grown cushion diamond

This 1.4ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG840629708 or 840629708. Listed at 12 retailers as of October 30, 2026, with prices from £192 to £1,367, a £1,175 spread on the same certified stone. Helzberg Diamonds lists it at £1,367. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.40
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840629708
Dimensions8.37 × 5.74 × 3.54 mm
L/W Ratio1.46
Girdle conditionFaceted
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
8.37 mm5.74 mm1.40 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840629708
Side View
Table 64.0%Crown 33.3°Girdle: STK-THKPavilion 32.1°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,367 GBP|Low: £192 GBP|High: £1,367 GBP|Avg: £536 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 10£192 GBP
Retailer 2£261 GBP
Retailer 5£357 GBP
Retailer 6£360 GBP
Retailer 7£365 GBP
Retailer 4£400 GBP
Retailer 9£518 GBP
Retailer 8£541 GBP
Retailer 11£685 GBP
Retailer 3£721 GBP
Helzberg Diamonds£1,367 GBP

5 data points across 11 retailers

12 retailers£192 GBP to £1,367 GBP

A
Cheapest Retailer
-
£192 GBP
$257 USD
Final sale: no returns
A
Retailer 2
-
£261 GBP
View
A
Retailer 3
-
£357 GBP
€455 EUR
View
A
Retailer 4
-
£360 GBP
$482 USD
View
A
Retailer 5
-
£365 GBP
ZAR 7,893 ZAR
View
A
Retailer 6
-
£400 GBP
View
B+
Retailer 7
-
£518 GBP
A$1,067 AUD
View
B+
Retailer 8
-
£541 GBP
$725 USD
View
B
Retailer 9
-
£685 GBP
SGD 1,241 SGD
View
B+
Retailer 10
-
£721 GBP
$967 USD
View
B
Retailer 11
-
£978 GBP
$1,310 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMIPNGO · Oct 31
£1,367 GBP
$1,831 USD
View
11 more retailers have this diamond
Prices start from £192 GBPSave up to £1,175 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
1.40ct Cushion
£192 GBP