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Cushion|Lab Grown|IGI

1.31ct E VVS1 Cushion Lab Grown Diamond

VG • E/VVS1 • IGI LG805697811

Certificate IGI LG805697811

Diamond specifications and retailer prices

From £858 GBP
$1,149 USD
As of October 31, 2026
Save £329 GBP (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,187 GBP at Kay Jewelers · As of October 30, 2026
View at Kay Jewelers

About this 1.31ct lab-grown cushion diamond

This 1.31ct 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 LG805697811 or 805697811. Listed at 4 retailers as of October 30, 2026, with prices from £858 to £1,187, a £329 spread on the same certified stone. Kay Jewelers lists it at £1,187. 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

1.31
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG805697811
Dimensions8.05 × 5.78 × 3.78 mm
L/W Ratio1.39
Top View
8.05 mm5.78 mm1.31 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805697811
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 65.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,187 GBP|Low: £858 GBP|High: £1,187 GBP|Avg: £1,084 GBP
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2£858 GBP
Retailer 3£993 GBP
Kay Jewelers£1,187 GBP
Retailer 4£1,187 GBP

2 data points across 4 retailers

4 retailers£858 GBP to £1,187 GBP

B
Cheapest Retailer
-
£858 GBP
$1,149 USD
B
Retailer 2
-
£993 GBP
$1,330 USD
View
B
Retailer 3
-
£1,187 GBP
$1,590 USD
View
Most Expensive
B
Kay Jewelers
259216137 · Oct 30
£1,187 GBP
$1,590 USD
View
3 more retailers have this diamond
Prices start from £858 GBPSave up to £329 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
1.31ct Cushion
£858 GBP