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Cushion|Lab Grown|IGI

5.43ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG837679800

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837679800

Diamond specifications and retailer prices

From £909 GBP
$1,218 USD
As of October 31, 2026
Save £319 GBP (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £9,852 GBP at Brilliant Earth · As of October 1, 2026
View at Brilliant Earth

About this 5.43ct lab-grown cushion diamond

This 5.43ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837679800 or 837679800. Listed at 4 retailers as of October 30, 2026, with a 35% 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

5.43
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837679800
Dimensions11.86 × 9.28 × 6.18 mm
L/W Ratio1.28
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.86 mm9.28 mm5.43 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837679800
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 36.7°Culet: NoneDepth 66.6%

Caratlytics Score

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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 31
Current: £9,852 GBP|Low: £902 GBP|High: £9,852 GBP|Avg: £4,273 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 27, 2026
Retailer 2£909 GBP
Retailer 3£1,228 GBP
Retailer 5£1,261 GBP
Retailer 4£2,543 GBP
Brilliant Earth£9,852 GBP

12 data points across 5 retailers

4 retailers£909 GBP to £1,228 GBP

A
Cheapest Retailer
-
£909 GBP
$1,218 USD
Final sale: no returns
A
Retailer 2
-
£1,228 GBP
$1,646 USD
View
Retailer 3
-
£2,543 GBP
$3,408 USD
View
Price last confirmed 10 days ago
Most Expensive
Brilliant Earth
21486076A · Oct 1
£9,852 GBP
$13,200 USD
View
Price last confirmed 30 days ago
3 more retailers have this diamond
Prices start from £909 GBPSave up to £319 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
5.43ct Cushion
£909 GBP