CaratHunter
Plans
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 $4,526 AUD
$3,179 USD
As of October 31, 2026
Save $11,815 AUD (72%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $16,340 AUD 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 20 retailers as of October 30, 2026, with prices from $4,526 to $16,340, a $11,815 spread on the same certified stone. Taylor and Hart lists it at $16,340. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,336 AUD|Low: $4,526 AUD|High: $17,135 AUD|Avg: $9,593 AUD|-8.6%
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
Retailer 18
Taylor and Hart
October 31, 2026
Retailer 12$4,526 AUD
Retailer 7$4,847 AUD
Retailer 4$4,919 AUD
Retailer 10$4,921 AUD
Retailer 11$6,069 AUD
Retailer 1$6,336 AUD
Retailer 5$7,050 AUD
Retailer 14$7,496 AUD
Retailer 18$8,092 AUD
Retailer 17$8,099 AUD
Retailer 13$9,982 AUD
Retailer 9$10,407 AUD
Retailer 8$10,561 AUD
Retailer 2$11,221 AUD
Retailer 15$11,951 AUD
Retailer 3$12,284 AUD
Retailer 16$13,054 AUD
Retailer 6$13,980 AUD
Taylor and Hart$16,340 AUD

33 data points across 19 retailers

20 retailers$4,526 AUD to $16,340 AUD

A
Cheapest Retailer
-
$4,526 AUD
$3,179 USD
Final sale: no returns
A
Retailer 2
-
$4,847 AUD
$3,405 USD
View
A
Retailer 3
-
$4,919 AUD
$3,455 USD
View
Retailer 4
-
$4,921 AUD
$3,457 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
$6,069 AUD
$4,263 USD
View
A
Retailer 6
-
$6,336 AUD
£3,504 GBP
View
Retailer 7
-
$6,820 AUD
£3,772 GBP
View
Price last confirmed 19 days ago
A
Retailer 8
-
$7,050 AUD
$4,952 USD
View
A
Retailer 9
-
$7,496 AUD
€5,015 EUR
View
A
Retailer 10
-
$8,092 AUD
£4,476 GBP
View
A
Retailer 11
-
$8,099 AUD
$5,689 USD
View
A
Retailer 12
-
$9,982 AUD
ZAR 113,279 ZAR
View
Retailer 13
-
$10,407 AUD
$7,310 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$10,561 AUD
View
Price last confirmed 8 days ago
A
Retailer 15
-
$11,221 AUD
$7,882 USD
View
A
Retailer 16
-
$11,951 AUD
£6,610 GBP
View
B+
Retailer 17
-
$12,284 AUD
$8,629 USD
View
B+
Retailer 18
-
$13,054 AUD
$9,170 USD
View
B+
Retailer 19
-
$13,980 AUD
$9,820 USD
View
Most Expensive
B+
Taylor and Hart
7VGQJQS · Oct 30
$16,340 AUD
$11,478 USD
View
19 more retailers have this diamond
Prices start from $4,526 AUDSave up to $11,815 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
$4,526 AUD