Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG804665090

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

Certificate IGI LG804665090

Diamond specifications and retailer prices

From $4,105 USD
As of October 29, 2026
Save $21,715 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $25,820 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.28ct lab-grown cushion diamond

This 4.28ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG804665090 or 804665090. Listed at 10 retailers as of October 29, 2026, with prices from $4,105 to $25,820, a $21,715 spread on the same certified stone. Do Amore Diamonds lists it at $25,820. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.28
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804665090
Dimensions9.41 × 9.32 × 6.23 mm
L/W Ratio1.01
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
9.41 mm9.32 mm4.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804665090
Side View
Table 64.0%Crown 38.8°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 66.8%

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: Oct 29
Current: $25,820 USD|Low: $4,105 USD|High: $33,090 USD|Avg: $11,558 USD|-22.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 9$4,105 USD
Retailer 6$4,415 USD
Retailer 4$4,787 USD
Retailer 10$5,714 USD
Retailer 8$6,795 USD
Retailer 5$8,306 USD
Retailer 11$8,567 USD
Retailer 7$10,005 USD
Retailer 2$13,260 USD
Retailer 3$14,973 USD
Do Amore Diamonds$25,820 USD

26 data points across 11 retailers

10 retailers$4,105 USD to $25,820 USD

A
Cheapest Retailer
-
$4,105 USD
A
Retailer 2
-
$4,415 USD
View
A
Retailer 3
-
$4,787 USD
View
A
Retailer 4
-
$5,714 USD
View
Final sale: no returns
A
Retailer 5
-
$6,795 USD
View
A
Retailer 6
-
$8,306 USD
€7,910 EUR
View
Retailer 7
-
$8,567 USD
View
Price last confirmed 82 days ago
B+
Retailer 8
-
$10,005 USD
£7,878 GBP
View
B+
Retailer 9
-
$13,260 USD
View
Most Expensive
B
Do Amore Diamonds
27-29F68735D · Oct 30
$25,820 USD
View
9 more retailers have this diamond
Prices start from $4,105 USDSave up to $21,715 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
4.28ct Cushion
$4,105 USD