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Cushion|Lab Grown|IGI

0.78ct E VVS1 Cushion Lab Grown Diamond

EX • E/VVS1 • IGI LG667443631

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG667443631

Diamond specifications and retailer prices

From £300 GBP
$400 USD
As of October 30, 2026
Save £448 GBP (60%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £834 GBP at MOH London · As of October 1, 2026
View at MOH London

About this 0.78ct lab-grown cushion diamond

This 0.78ct lab-grown cushion sits in the just-under-one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG667443631 or 667443631. Listed at 11 retailers as of October 29, 2026, with a 149% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.78
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG667443631
Dimensions4.78 × 4.78 × 6.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.78 mm4.78 mm0.78 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG667443631
Side View
Table 63.0%Crown 35.2°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 67.8%

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: £834 GBP|Low: £113 GBP|High: £871 GBP|Avg: £429 GBP|+0.1%
MOH London
Retailer 2
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Retailer 11
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Retailer 21
October 19, 2026
Retailer 7£164 GBP
Retailer 21£176 GBP
Retailer 18£237 GBP
Retailer 9£252 GBP
Retailer 20£286 GBP
Retailer 16£300 GBP
Retailer 5£312 GBP
Retailer 3£317 GBP
Retailer 4£321 GBP
Retailer 8£339 GBP
Retailer 15£384 GBP
Retailer 19£419 GBP
Retailer 6£448 GBP
Retailer 14£458 GBP
Retailer 17£463 GBP
Retailer 11£580 GBP
Retailer 10£607 GBP
Retailer 2£634 GBP
Retailer 13£749 GBP
MOH London£834 GBP
Retailer 12£871 GBP

25 data points across 21 retailers

11 retailers£300 GBP to £749 GBP

Retailer 1
-
£237 GBP
$315 USD
Price last confirmed 24 days ago
A
Retailer 2
-
£300 GBP
$400 USD
View
Retailer 3
-
£317 GBP
ZAR 6,814 ZAR
View
Price last confirmed 28 days ago
Retailer 4
-
£321 GBP
$427 USD
View
Price last confirmed 27 days ago
B+
Retailer 5
-
£384 GBP
$511 USD
View
Retailer 6
-
£419 GBP
A$858 AUD
View
Price last confirmed 27 days ago
B+
Retailer 7
-
£463 GBP
$616 USD
View
Retailer 8
-
£607 GBP
$809 USD
View
Price last confirmed 27 days ago
B
Retailer 9
-
£634 GBP
CA$1,173 CAD
View
B
Retailer 10
-
£749 GBP
$997 USD
View
Most Expensive
MOH London
LG667443631 · Oct 1
£834 GBP
View
Price last confirmed 29 days ago
10 more retailers have this diamond
Prices start from £300 GBPSave up to £448 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
0.78ct Cushion
£300 GBP