Cushion|Lab Grown|IGI

4.05ct E FL Cushion Lab Grown Diamond

EX • E/FL • IGI LG797604470

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG797604470

Diamond specifications and retailer prices

From $5,470 USD
As of October 29, 2026
Save $11,248 USD (67%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $16,718 USD at Riddles Jewelry · As of October 29, 2026
View at Riddles Jewelry

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 LG797604470 or 797604470. Listed at 8 retailers as of October 29, 2026, with prices from $5,470 to $16,718, a $11,248 spread on the same certified stone. Riddles Jewelry lists it at $16,718. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797604470
Dimensions11.34 × 8.35 × 5.56 mm
L/W Ratio1.36
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.34 mm8.35 mm4.05 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797604470
Side View
Table 62.0%Crown 35.2°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 66.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $5,459 USD|Low: $4,288 USD|High: $30,846 USD|Avg: $11,853 USD|-16.9%
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
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Retailer 16
Riddles Jewelry
October 18, 2026
Retailer 1$5,459 USD
Retailer 11$5,470 USD
Retailer 10$5,814 USD
Retailer 14$6,018 USD
Retailer 8$6,055 USD
Retailer 16$6,570 USD
Retailer 15$7,922 USD
Retailer 2$8,199 USD
Retailer 3$9,450 USD
Retailer 9$10,500 USD
Retailer 6$13,091 USD
Retailer 13$15,146 USD
Retailer 12$15,985 USD
Riddles Jewelry$16,718 USD
Retailer 5$17,297 USD
Retailer 7$22,110 USD
Retailer 4$30,846 USD

9 data points across 17 retailers

8 retailers$5,470 USD to $16,718 USD

Retailer 1
-
$5,459 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$5,470 USD
View
A
Retailer 3
-
$5,814 USD
CA$8,075 CAD
View
A
Retailer 4
-
$6,018 USD
View
Final sale: no returns
B+
Retailer 5
-
$10,500 USD
View
B
Retailer 6
-
$15,146 USD
View
B
Retailer 7
-
$15,985 USD
View
Most Expensive
B
Riddles Jewelry
1976264165 · Oct 29
$16,718 USD
View
7 more retailers have this diamond
Prices start from $5,470 USDSave up to $11,248 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
$5,470 USD