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Cushion|Lab Grown|IGI

4.05ct D VS2 Cushion Lab Grown Diamond

ID • D/VS2 • IGI LG757525621

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG757525621

Diamond specifications and retailer prices

From $1,338 AUD
$940 USD
As of October 29, 2026
Save $8,371 AUD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,709 AUD at Brilliant Earth · As of October 29, 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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG757525621 or 757525621. Listed at 12 retailers as of October 29, 2026, with prices from $1,338 to $9,709, a $8,371 spread on the same certified stone. Brilliant Earth lists it at $9,709. 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
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG757525621
Dimensions9.39 × 9.16 × 6.13 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.39 mm9.16 mm4.05 ctD / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG757525621
Side View
Table 62.0%Crown 36.1°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 66.9%

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 29
Current: $9,709 AUD|Low: $1,076 AUD|High: $10,492 AUD|Avg: $3,325 AUD|-7.5%
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
October 30, 2026
Retailer 9$1,076 AUD
Retailer 10$1,338 AUD
Retailer 13$1,684 AUD
Retailer 2$1,736 AUD
Retailer 12$1,771 AUD
Retailer 6$1,822 AUD
Retailer 4$2,713 AUD
Retailer 3$3,385 AUD
Retailer 11$3,704 AUD
Retailer 5$3,747 AUD
Retailer 8$4,420 AUD
Retailer 7$4,599 AUD
Brilliant Earth$9,709 AUD

38 data points across 13 retailers

12 retailers$1,338 AUD to $9,709 AUD

Retailer 1
-
$1,076 AUD
£595 GBP
Price last confirmed 14 days ago
A
Retailer 2
-
$1,338 AUD
$940 USD
View
A
Retailer 3
-
$1,684 AUD
$1,183 USD
View
A
Retailer 4
-
$1,736 AUD
£960 GBP
View
A
Retailer 5
-
$1,771 AUD
$1,244 USD
View
A
Retailer 6
-
$1,822 AUD
€1,219 EUR
View
A
Retailer 7
-
$2,713 AUD
$1,906 USD
View
B+
Retailer 8
-
$3,385 AUD
£1,872 GBP
View
B+
Retailer 9
-
$3,704 AUD
$2,602 USD
View
Retailer 10
-
$3,747 AUD
$2,632 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
$4,599 AUD
£2,544 GBP
View
Most Expensive
B
Brilliant Earth
17039398A · Oct 29
$9,709 AUD
$6,820 USD
View
11 more retailers have this diamond
Prices start from $1,338 AUDSave up to $8,371 AUD

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
$1,338 AUD