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Cushion|Lab Grown|IGI

8.18ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG803621603

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG803621603

Diamond specifications and retailer prices

From £3,279 GBP
$4,393 USD
As of November 1, 2026
Save £9,705 GBP (75%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £12,983 GBP at Adiamor · As of October 31, 2026
View at Adiamor

About this 8.18ct lab-grown cushion diamond

This 8.18ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG803621603 or 803621603. Listed at 6 retailers as of October 31, 2026, with prices from £3,279 to £12,983, a £9,705 spread on the same certified stone. Adiamor lists it at £12,983. 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

8.18
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803621603
Dimensions14.12 × 9.48 × 5.99 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizeLarge
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.12 mm9.48 mm8.18 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803621603
Side View
Table 60.0%Crown 42.7°Girdle: MED-STKPavilion 40°Culet: LargeDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £12,983 GBP|Low: £3,155 GBP|High: £12,983 GBP|Avg: £7,329 GBP
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 5£3,279 GBP
Retailer 2£4,177 GBP
Retailer 4£4,952 GBP
Retailer 3£6,879 GBP
Retailer 6£11,279 GBP
Adiamor£12,983 GBP

40 data points across 6 retailers

6 retailers£3,279 GBP to £12,983 GBP

A
Cheapest Retailer
-
£3,279 GBP
$4,393 USD
B+
Retailer 2
-
£4,177 GBP
View
B+
Retailer 3
-
£4,952 GBP
$6,635 USD
View
B+
Retailer 4
-
£6,879 GBP
View
B
Retailer 5
-
£11,279 GBP
$15,113 USD
View
Most Expensive
B
Adiamor
D-81070389 · Oct 31
£12,983 GBP
$17,396 USD
View
5 more retailers have this diamond
Prices start from £3,279 GBPSave up to £9,705 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
8.18ct Cushion
£3,279 GBP