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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 $2,380 USD
As of October 29, 2026
Save $12,240 USD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $14,620 USD at Do Amore Diamonds · As of October 29, 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 29, 2026, with prices from $2,380 to $14,620, a $12,240 spread on the same certified stone. Do Amore Diamonds lists it at $14,620. 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
Color
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

How it works →
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 29
Current: $2,875 USD|Low: $2,380 USD|High: $7,384 USD|Avg: $4,191 USD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7$2,380 USD
Retailer 10$2,466 USD
Retailer 2$2,628 USD
Retailer 8$2,630 USD
Retailer 1$2,875 USD
Retailer 11$3,463 USD
Retailer 4$3,748 USD
Retailer 3$5,166 USD
Retailer 5$5,267 USD
Retailer 9$6,549 USD
Retailer 6$7,325 USD

44 data points across 11 retailers

15 retailers$2,380 USD to $14,620 USD

A
Cheapest Retailer
-
$2,380 USD
Final sale: no returns
Retailer 2
-
$2,466 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$2,628 USD
View
A
Retailer 4
-
$2,630 USD
View
A
Retailer 5
-
$2,875 USD
£2,263 GBP
View
A
Retailer 6
-
$3,100 USD
View
B+
Retailer 7
-
$3,463 USD
View
B+
Retailer 8
-
$3,748 USD
£2,951 GBP
View
B+
Retailer 9
-
$5,166 USD
£4,068 GBP
View
B+
Retailer 10
-
$5,267 USD
ZAR 85,083 ZAR
View
Retailer 11
-
$6,549 USD
A$10,076 AUD
View
Price last confirmed 21 days ago
B
Retailer 12
-
$6,913 USD
View
B
Retailer 13
-
$7,325 USD
£5,768 GBP
View
B
Retailer 14
-
$9,504 USD
View
Most Expensive
B
Do Amore Diamonds
27-6BB238219 · Oct 29
$14,620 USD
View
14 more retailers have this diamond
Prices start from $2,380 USDSave up to $12,240 USD

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
$2,380 USD