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Cushion|Lab Grown|IGI

4.56ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780665478

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG780665478

Diamond specifications and retailer prices

From $4,615 USD
As of November 2, 2026
Save $24,805 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $29,420 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 4.56ct lab-grown cushion diamond

This 4.56ct 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 LG780665478 or 780665478. Listed at 10 retailers as of November 2, 2026, with prices from $4,615 to $29,420, a $24,805 spread on the same certified stone. Do Amore Diamonds lists it at $29,420. 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

4.56
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665478
Dimensions9.71 × 9.49 × 6.29 mm
L/W Ratio1.02
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
9.71 mm9.49 mm4.56 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665478
Side View
Table 60.0%Crown 37.2°Girdle: STK-THKPavilion 38.5°Culet: NoneDepth 66.3%

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: Nov 2
Current: $29,420 USD|Low: $4,615 USD|High: $37,750 USD|Avg: $13,064 USD|-22.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$4,615 USD
Retailer 8$5,005 USD
Retailer 7$6,032 USD
Retailer 10$6,952 USD
Retailer 4$7,677 USD
Retailer 2$9,455 USD
Retailer 3$11,339 USD
Retailer 6$13,260 USD
Retailer 9$13,674 USD
Do Amore Diamonds$29,420 USD

34 data points across 10 retailers

10 retailers$4,615 USD to $29,420 USD

A
Cheapest Retailer
-
$4,615 USD
A
Retailer 2
-
$5,005 USD
View
A
Retailer 3
-
$6,032 USD
View
A
Retailer 4
-
$6,952 USD
View
Final sale: no returns
A
Retailer 5
-
$7,677 USD
View
A
Retailer 6
-
$9,455 USD
€9,005 EUR
View
B+
Retailer 7
-
$11,339 USD
£8,928 GBP
View
B+
Retailer 8
-
$13,260 USD
View
B+
Retailer 9
-
$13,674 USD
View
Most Expensive
B
Do Amore Diamonds
27-1F7C21610 · Nov 2
$29,420 USD
View
9 more retailers have this diamond
Prices start from $4,615 USDSave up to $24,805 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
4.56ct Cushion
$4,615 USD