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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 €1,629 EUR
$1,820 USD
As of October 31, 2026
Save €7,778 EUR (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €10,768 EUR 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 31, 2026, with a 477% 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €10,768 EUR|Low: €1,531 EUR|High: €10,768 EUR|Avg: €4,075 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 16€1,629 EUR
Retailer 14€1,756 EUR
Retailer 7€1,810 EUR
Retailer 10€2,187 EUR
Retailer 4€2,188 EUR
Retailer 15€2,483 EUR
Retailer 3€2,627 EUR
Retailer 2€2,765 EUR
Retailer 9€3,629 EUR
Retailer 17€3,728 EUR
Retailer 19€3,758 EUR
Retailer 5€4,546 EUR
Retailer 11€4,584 EUR
Retailer 20€4,883 EUR
Retailer 18€5,029 EUR
Retailer 13€5,728 EUR
Retailer 8€6,160 EUR
Retailer 12€6,320 EUR
Retailer 6€9,407 EUR
Brilliant Earth€10,768 EUR

35 data points across 20 retailers

20 retailers€1,629 EUR to €9,407 EUR

A
Cheapest Retailer
-
€1,629 EUR
$1,820 USD
A
Retailer 2
-
€1,756 EUR
$1,962 USD
View
Final sale: no returns
A
Retailer 3
-
€1,810 EUR
$2,022 USD
View
A
Retailer 4
-
€2,187 EUR
$2,443 USD
View
A
Retailer 5
-
€2,188 EUR
HK$19,100 HKD
View
A
Retailer 6
-
€2,483 EUR
£2,184 GBP
View
B+
Retailer 7
-
€2,627 EUR
$2,935 USD
View
A
Retailer 8
-
€2,765 EUR
View
B+
Retailer 9
-
€3,629 EUR
£3,192 GBP
View
B+
Retailer 10
-
€3,728 EUR
ZAR 67,292 ZAR
View
Retailer 11
-
€3,758 EUR
A$6,460 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
€4,546 EUR
$5,079 USD
View
B
Retailer 13
-
€4,584 EUR
$5,122 USD
View
Retailer 14
-
€4,883 EUR
$5,455 USD
View
Price last confirmed 12 days ago
B+
Retailer 15
-
€5,029 EUR
£4,424 GBP
View
B
Retailer 16
-
€5,728 EUR
A$9,845 AUD
View
B
Retailer 17
-
€6,160 EUR
$6,882 USD
View
B
Retailer 18
-
€6,320 EUR
SGD 9,542 SGD
View
B
Retailer 19
-
€9,407 EUR
$10,510 USD
View
Most Expensive
Brilliant Earth
12545308Y · Oct 21
€10,768 EUR
$12,030 USD
View
Price last confirmed 10 days ago
19 more retailers have this diamond
Prices start from €1,629 EURSave up to €7,778 EUR

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
€1,629 EUR