Cushion|Lab Grown|IGI

4.05ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG804659510

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804659510

Diamond specifications and retailer prices

From $4,422 USD
As of October 29, 2026
Save $14,000 USD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,422 USD at With Clarity · As of October 30, 2026
View at With Clarity

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804659510 or 804659510. Listed at 14 retailers as of October 29, 2026, with prices from $4,422 to $18,422, a $14,000 spread on the same certified stone. With Clarity lists it at $18,422. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804659510
Dimensions10.68 × 8.66 × 5.51 mm
L/W Ratio1.23
Girdle conditionFaceted
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
10.68 mm8.66 mm4.05 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804659510
Side View
Table 62.0%Crown 36.3°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 63.6%

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 29
Current: $6,116 USD|Low: $4,422 USD|High: $22,370 USD|Avg: $9,898 USD|-18.8%
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
With Clarity
October 30, 2026
Retailer 11$4,422 USD
Retailer 3$5,811 USD
Retailer 13$6,096 USD
Retailer 1$6,116 USD
Retailer 2$7,138 USD
Retailer 7$7,641 USD
Retailer 9$7,835 USD
Retailer 4$8,756 USD
Retailer 6$9,911 USD
Retailer 8$10,028 USD
Retailer 10$11,640 USD
Retailer 12$12,474 USD
Retailer 5$16,527 USD
With Clarity$18,422 USD

41 data points across 14 retailers

14 retailers$4,422 USD to $18,422 USD

A
Cheapest Retailer
-
$4,422 USD
A
Retailer 2
-
$5,811 USD
HK$45,400 HKD
View
A
Retailer 3
-
$6,096 USD
View
A
Retailer 4
-
$6,116 USD
£4,816 GBP
View
A
Retailer 5
-
$7,138 USD
View
A
Retailer 6
-
$7,641 USD
€7,277 EUR
View
Retailer 7
-
$7,835 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$8,756 USD
View
B+
Retailer 9
-
$9,911 USD
ZAR 160,110 ZAR
View
B+
Retailer 10
-
$10,028 USD
£7,896 GBP
View
B+
Retailer 11
-
$11,640 USD
View
B+
Retailer 12
-
$12,474 USD
View
B+
Retailer 13
-
$16,527 USD
View
Most Expensive
B
With Clarity
804659510 · Oct 30
$18,422 USD
View
13 more retailers have this diamond
Prices start from $4,422 USDSave up to $14,000 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
$4,422 USD