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Cushion|Lab Grown|IGI

4.05ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG660415012

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG660415012

Diamond specifications and retailer prices

From $1,962 USD
As of October 28, 2026
Save $8,548 USD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $12,030 USD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG660415012 or 660415012. Listed at 20 retailers as of October 28, 2026, with a 436% 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

4.05
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660415012
Dimensions10.44 × 8.68 × 5.72 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.44 mm8.68 mm4.05 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660415012
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 36.3°Culet: NoneDepth 65.9%

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: Oct 28
Current: $12,030 USD|Low: $1,711 USD|High: $12,030 USD|Avg: $4,499 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 29, 2026
Retailer 3$1,962 USD
Retailer 15$2,015 USD
Retailer 7$2,022 USD
Retailer 10$2,443 USD
Retailer 4$2,445 USD
Retailer 14$2,757 USD
Retailer 19$2,935 USD
Retailer 2$3,110 USD
Retailer 9$4,054 USD
Retailer 16$4,149 USD
Retailer 17$4,199 USD
Retailer 5$5,079 USD
Retailer 11$5,122 USD
Retailer 18$5,455 USD
Retailer 13$5,618 USD
Retailer 20$6,492 USD
Retailer 8$6,882 USD
Retailer 12$7,061 USD
Retailer 6$10,510 USD
Brilliant Earth$12,030 USD

36 data points across 20 retailers

20 retailers$1,962 USD to $10,510 USD

A
Cheapest Retailer
-
$1,962 USD
Final sale: no returns
A
Retailer 2
-
$2,015 USD
View
A
Retailer 3
-
$2,022 USD
View
A
Retailer 4
-
$2,443 USD
View
A
Retailer 5
-
$2,445 USD
HK$19,100 HKD
View
A
Retailer 6
-
$2,757 USD
£2,171 GBP
View
B+
Retailer 7
-
$2,935 USD
View
B+
Retailer 8
-
$3,110 USD
€2,962 EUR
View
B+
Retailer 9
-
$4,054 USD
£3,192 GBP
View
B+
Retailer 10
-
$4,149 USD
ZAR 67,028 ZAR
View
B+
Retailer 11
-
$4,199 USD
A$6,460 AUD
View
B
Retailer 12
-
$5,079 USD
View
B
Retailer 13
-
$5,122 USD
View
B+
Retailer 14
-
$5,455 USD
View
Price last confirmed 10 days ago
B+
Retailer 15
-
$5,618 USD
£4,424 GBP
View
B
Retailer 16
-
$6,492 USD
A$9,988 AUD
View
Price last confirmed 24 days ago
B
Retailer 17
-
$6,882 USD
View
B
Retailer 18
-
$7,061 USD
SGD 9,542 SGD
View
B
Retailer 19
-
$10,510 USD
View
Most Expensive
B
Brilliant Earth
12545308Y · Oct 21
$12,030 USD
View
Price last confirmed 7 days ago
19 more retailers have this diamond
Prices start from $1,962 USDSave up to $8,548 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
4.05ct Cushion
$1,962 USD