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Cushion|Lab Grown|IGI

1.28ct E VVS1 Cushion Lab Grown Diamond

VG • E/VVS1 • IGI LG651420081

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG651420081

Diamond specifications and retailer prices

From £836 GBP
$1,120 USD
As of October 31, 2026
Save £328 GBP (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,164 GBP at Kay Jewelers · As of October 30, 2026
View at Kay Jewelers

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 very-good cut grade and certified by IGI LG651420081 or 651420081. Listed at 3 retailers as of October 30, 2026, with prices from £836 to £1,164, a £328 spread on the same certified stone. Kay Jewelers lists it at £1,164. 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

1.28
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.8°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG651420081
Dimensions7.41 × 5.86 × 3.89 mm
L/W Ratio1.26
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.41 mm5.86 mm1.28 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG651420081
Side View
Table 63.0%Crown 29.8°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 66.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £1,164 GBP|Low: £836 GBP|High: £1,470 GBP|Avg: £1,170 GBP|-20.8%
Kay Jewelers
Retailer 2
Retailer 3
September 26, 2026
Retailer 2£836 GBP
Retailer 3£970 GBP
Kay Jewelers£1,164 GBP

7 data points across 3 retailers

3 retailers£836 GBP to £1,164 GBP

B
Cheapest Retailer
-
£836 GBP
$1,120 USD
B
Retailer 2
-
£970 GBP
$1,300 USD
View
Most Expensive
B
Kay Jewelers
253935784 · Oct 30
£1,164 GBP
$1,560 USD
View
2 more retailers have this diamond
Prices start from £836 GBPSave up to £328 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
£836 GBP