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Cushion|Lab Grown|IGI

5.86ct E VVS2 Cushion Lab Grown Diamond

EX • E/VVS2 • IGI LG830690740

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830690740

Diamond specifications and retailer prices

From £793 GBP
$1,056 USD
As of October 29, 2026
Save £504 GBP (39%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £4,453 GBP at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 5.86ct lab-grown cushion diamond

This 5.86ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG830690740 or 830690740. Listed at 3 retailers as of October 29, 2026, with a 64% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.86
Carat
E
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830690740
Dimensions12.64 × 9.22 × 6.25 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.64 mm9.22 mm5.86 ctE / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830690740
Side View
Table 60.0%Crown 36.4°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 67.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £4,453 GBP|Low: £793 GBP|High: £4,479 GBP|Avg: £2,360 GBP|-0.6%
Rare Carat
Retailer 2
Retailer 3
October 30, 2026
Retailer 3£793 GBP
Retailer 2£1,297 GBP
Rare Carat£4,453 GBP

38 data points across 3 retailers

3 retailers£793 GBP to £1,297 GBP

A
Cheapest Retailer
-
£793 GBP
$1,056 USD
Final sale: no returns
A
Retailer 2
-
£1,297 GBP
View
Most Expensive
Rare Carat
830690740 · Oct 19
£4,453 GBP
$5,930 USD
View
Price last confirmed 11 days ago
2 more retailers have this diamond
Prices start from £793 GBPSave up to £504 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
5.86ct Cushion
£793 GBP