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Cushion|Lab Grown|IGI

4.57ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG821641252

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821641252

Diamond specifications and retailer prices

From $5,971 USD
As of November 2, 2026
Save $20,161 USD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $26,132 USD at With Clarity · As of November 3, 2026
View at With Clarity

About this 4.57ct lab-grown cushion diamond

This 4.57ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821641252 or 821641252. Listed at 11 retailers as of November 2, 2026, with prices from $5,971 to $26,132, a $20,161 spread on the same certified stone. With Clarity lists it at $26,132. 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

4.57
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641252
Dimensions11.04 × 8.85 × 5.85 mm
L/W Ratio1.25
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
11.04 mm8.85 mm4.57 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641252
Side View
Table 61.0%Crown 38.4°Girdle: STK-THKPavilion 35°Culet: NoneDepth 66.1%

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: Nov 2
Current: $17,695 USD|Low: $5,971 USD|High: $34,195 USD|Avg: $14,919 USD|-20.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
November 3, 2026
Retailer 8$5,971 USD
Retailer 7$8,187 USD
Retailer 2$8,243 USD
Retailer 3$8,289 USD
Retailer 6$10,105 USD
Retailer 4$10,759 USD
Retailer 5$13,263 USD
Retailer 9$13,290 USD
Retailer 1$17,695 USD
Retailer 10$22,987 USD
With Clarity$26,132 USD

42 data points across 11 retailers

11 retailers$5,971 USD to $26,132 USD

A
Cheapest Retailer
-
$5,971 USD
A
Retailer 2
-
$8,187 USD
View
A
Retailer 3
-
$8,243 USD
HK$64,400 HKD
View
A
Retailer 4
-
$8,289 USD
£6,526 GBP
View
B+
Retailer 5
-
$10,105 USD
View
B+
Retailer 6
-
$10,759 USD
€10,247 EUR
View
B+
Retailer 7
-
$13,263 USD
£10,443 GBP
View
B+
Retailer 8
-
$13,290 USD
View
Retailer 9
-
$17,695 USD
View
B
Retailer 10
-
$22,987 USD
View
Most Expensive
B
With Clarity
821641252 · Nov 3
$26,132 USD
View
10 more retailers have this diamond
Prices start from $5,971 USDSave up to $20,161 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
4.57ct Cushion
$5,971 USD