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Cushion|Lab Grown|IGI

6.40ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG706534146

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG706534146

Diamond specifications and retailer prices

From $4,633 NZD
$2,611 USD
As of October 31, 2026
Save $21,308 NZD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $25,940 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 6.4ct lab-grown cushion diamond

This 6.4ct 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 LG706534146 or 706534146. Listed at 15 retailers as of October 31, 2026, with prices from $4,633 to $25,940, a $21,308 spread on the same certified stone. Do Amore Diamonds lists it at $25,940. 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

6.40
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706534146
Dimensions9.80 × 9.80 × 6.41 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.80 mm9.80 mm6.40 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706534146
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 65.4%

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: $11,481 NZD|Low: $4,223 NZD|High: $13,101 NZD|Avg: $7,451 NZD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10$4,375 NZD
Retailer 4$4,633 NZD
Retailer 2$4,663 NZD
Retailer 9$4,666 NZD
Retailer 6$5,100 NZD
Retailer 11$6,144 NZD
Retailer 5$6,650 NZD
Retailer 3$9,167 NZD
Retailer 7$9,345 NZD
Retailer 1$11,481 NZD
Retailer 8$12,997 NZD

43 data points across 11 retailers

15 retailers$4,633 NZD to $25,940 NZD

Retailer 1
-
$4,375 NZD
$2,466 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$4,633 NZD
$2,611 USD
View
Final sale: no returns
A
Retailer 3
-
$4,663 NZD
$2,628 USD
View
A
Retailer 4
-
$4,666 NZD
$2,630 USD
View
A
Retailer 5
-
$5,100 NZD
£2,263 GBP
View
A
Retailer 6
-
$5,500 NZD
$3,100 USD
View
B+
Retailer 7
-
$6,144 NZD
$3,463 USD
View
B+
Retailer 8
-
$6,650 NZD
£2,951 GBP
View
B+
Retailer 9
-
$9,167 NZD
£4,068 GBP
View
B+
Retailer 10
-
$9,345 NZD
ZAR 85,083 ZAR
View
B+
Retailer 11
-
$11,481 NZD
A$9,955 AUD
View
B
Retailer 12
-
$12,265 NZD
$6,913 USD
View
B
Retailer 13
-
$12,997 NZD
£5,768 GBP
View
B
Retailer 14
-
$16,863 NZD
$9,504 USD
View
Most Expensive
B
Do Amore Diamonds
27-6BB238219 · Oct 31
$25,940 NZD
$14,620 USD
View
14 more retailers have this diamond
Prices start from $4,633 NZDSave up to $21,308 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
6.40ct Cushion
$4,633 NZD