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Cushion|Lab Grown|IGI

4.25ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780665477

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780665477

Diamond specifications and retailer prices

From $4,078 USD
As of October 29, 2026
Save $21,752 USD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $25,830 USD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 4.25ct lab-grown cushion diamond

This 4.25ct 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 LG780665477 or 780665477. Listed at 11 retailers as of October 28, 2026, with prices from $4,078 to $25,830, a $21,752 spread on the same certified stone. Do Amore Diamonds lists it at $25,830. 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

4.25
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665477
Dimensions10.79 × 8.51 × 5.67 mm
L/W Ratio1.27
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
10.79 mm8.51 mm4.25 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665477
Side View
Table 58.0%Crown 34.9°Girdle: THK-VTKPavilion 34.3°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
A+
Exceptional
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: $25,830 USD|Low: $4,078 USD|High: $32,860 USD|Avg: $12,659 USD|-21.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 9$4,078 USD
Retailer 5$4,180 USD
Retailer 10$4,733 USD
Retailer 12$5,677 USD
Retailer 8$6,748 USD
Retailer 2$7,960 USD
Retailer 3$8,512 USD
Retailer 6$9,949 USD
Retailer 7$11,480 USD
Retailer 11$22,320 USD
Do Amore Diamonds$25,830 USD
Retailer 4$27,379 USD

27 data points across 12 retailers

11 retailers$4,078 USD to $25,830 USD

A+
Cheapest Retailer
-
$4,078 USD
A
Retailer 2
-
$4,180 USD
View
A
Retailer 3
-
$4,733 USD
View
A
Retailer 4
-
$5,677 USD
View
Final sale: no returns
A
Retailer 5
-
$6,748 USD
View
A
Retailer 6
-
$7,960 USD
€7,581 EUR
View
A
Retailer 7
-
$8,512 USD
View
Price last confirmed 81 days ago
B+
Retailer 8
-
$9,949 USD
£7,834 GBP
View
B+
Retailer 9
-
$11,480 USD
View
B
Retailer 10
-
$22,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-6EADC235F · Oct 28
$25,830 USD
View
10 more retailers have this diamond
Prices start from $4,078 USDSave up to $21,752 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+
4.25ct Cushion
$4,078 USD