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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 $7,794 NZD
$4,393 USD
As of November 1, 2026
Save $23,071 NZD (75%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $30,866 NZD at Adiamor · As of November 2, 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 November 1, 2026, with prices from $7,794 to $30,866, a $23,071 spread on the same certified stone. Adiamor lists it at $30,866. 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

How it works →
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: $30,866 NZD|Low: $7,500 NZD|High: $30,866 NZD|Avg: $17,379 NZD
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$7,794 NZD
Retailer 2$9,848 NZD
Retailer 4$11,772 NZD
Retailer 3$16,355 NZD
Retailer 6$26,815 NZD
Adiamor$30,866 NZD

40 data points across 6 retailers

6 retailers$7,794 NZD to $30,866 NZD

A
Cheapest Retailer
-
$7,794 NZD
$4,393 USD
B+
Retailer 2
-
$9,848 NZD
£4,370 GBP
View
B+
Retailer 3
-
$11,772 NZD
$6,635 USD
View
B+
Retailer 4
-
$16,355 NZD
£7,258 GBP
View
B
Retailer 5
-
$26,815 NZD
$15,113 USD
View
Most Expensive
B
Adiamor
D-81070389 · Nov 2
$30,866 NZD
$17,396 USD
View
5 more retailers have this diamond
Prices start from $7,794 NZDSave up to $23,071 NZD

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
$7,794 NZD