Cushion|Lab Grown|IGI

1.28ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG689562843

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG689562843

Diamond specifications and retailer prices

From £485 GBP
$650 USD
As of October 30, 2026
8 retailers carry this diamond
Most expensive: £1,496 GBP at Yadav Diamonds · As of October 5, 2026
View at Yadav Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct 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 top-tier cut grade and certified by IGI LG689562843 or 689562843. Listed at 8 retailers as of October 30, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562843
Dimensions6.30 × 6.26 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.30 mm6.26 mm1.28 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562843
Side View
Table 63.0%Crown 35.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 67.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £384 GBP|Low: £162 GBP|High: £1,366 GBP|Avg: £580 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
October 8, 2026
Retailer 4£209 GBP
Retailer 12£233 GBP
Retailer 2£276 GBP
Retailer 13£302 GBP
Retailer 1£384 GBP
Retailer 9£432 GBP
Retailer 15£478 GBP
Retailer 14£482 GBP
Retailer 8£485 GBP
Retailer 5£565 GBP
Retailer 6£720 GBP
Retailer 3£786 GBP
Retailer 7£887 GBP
Retailer 11£943 GBP
Retailer 10£1,022 GBP

18 data points across 15 retailers

8 retailers

Retailer 1
-
£276 GBP
$370 USD
Price last confirmed 27 days ago
Retailer 2
-
£482 GBP
$646 USD
View
Price last confirmed 25 days ago
B+
Retailer 3
-
£485 GBP
$650 USD
View
Retailer 4
-
£720 GBP
SGD 1,304 SGD
View
Price last confirmed 26 days ago
Retailer 5
-
£786 GBP
$1,053 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£943 GBP
View
Price last confirmed 25 days ago
Retailer 7
-
£1,022 GBP
$1,370 USD
View
Price last confirmed 25 days ago
Most Expensive
Yadav Diamonds
13004967 · Oct 5
£1,496 GBP
$2,004 USD
View
Price last confirmed 26 days ago
7 more retailers have this diamond
Prices start from £485 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.

B+
1.28ct Cushion
£485 GBP