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Cushion|Lab Grown|IGI

4.05ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG760519436

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG760519436

Diamond specifications and retailer prices

From $3,179 USD
As of October 30, 2026
Save $8,299 USD (72%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,478 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG760519436 or 760519436. Listed at 19 retailers as of October 30, 2026, with prices from $3,179 to $11,478, a $8,299 spread on the same certified stone. Taylor and Hart lists it at $11,478. 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
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG760519436
Dimensions9.25 × 9.25 × 6.18 mm
L/W Ratio1.00
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
9.25 mm9.25 mm4.05 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG760519436
Side View
Table 62.0%Crown 37.1°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 66.8%

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 30
Current: $3,179 USD|Low: $3,179 USD|High: $12,036 USD|Avg: $6,763 USD|-8.9%
Retailer 1
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
Taylor and Hart
October 30, 2026
Retailer 1$3,179 USD
Retailer 6$3,405 USD
Retailer 3$3,455 USD
Retailer 9$3,457 USD
Retailer 10$4,451 USD
Retailer 4$4,952 USD
Retailer 12$5,266 USD
Retailer 16$5,685 USD
Retailer 15$5,689 USD
Retailer 11$7,012 USD
Retailer 8$7,310 USD
Retailer 7$7,418 USD
Retailer 17$7,882 USD
Retailer 13$8,395 USD
Retailer 2$8,629 USD
Retailer 14$9,170 USD
Retailer 5$9,820 USD
Taylor and Hart$11,478 USD

33 data points across 18 retailers

19 retailers$3,179 USD to $11,478 USD

A
Cheapest Retailer
-
$3,179 USD
Final sale: no returns
A
Retailer 2
-
$3,405 USD
View
A
Retailer 3
-
$3,455 USD
View
Retailer 4
-
$3,457 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
$4,451 USD
£3,504 GBP
View
Retailer 6
-
$4,791 USD
£3,772 GBP
View
Price last confirmed 18 days ago
A
Retailer 7
-
$4,952 USD
View
A
Retailer 8
-
$5,266 USD
€5,015 EUR
View
A
Retailer 9
-
$5,685 USD
£4,476 GBP
View
A
Retailer 10
-
$5,689 USD
View
A
Retailer 11
-
$7,012 USD
ZAR 113,279 ZAR
View
Retailer 12
-
$7,310 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$7,418 USD
A$11,413 AUD
View
Price last confirmed 8 days ago
A
Retailer 14
-
$7,882 USD
View
A
Retailer 15
-
$8,395 USD
£6,610 GBP
View
B+
Retailer 16
-
$8,629 USD
View
B+
Retailer 17
-
$9,170 USD
View
B+
Retailer 18
-
$9,820 USD
View
Most Expensive
B+
Taylor and Hart
7VGQJQS · Oct 30
$11,478 USD
View
18 more retailers have this diamond
Prices start from $3,179 USDSave up to $8,299 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
$3,179 USD