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Cushion|Lab Grown|IGI

4.20ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG803623561

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

Certificate IGI LG803623561

Diamond specifications and retailer prices

From $4,766 USD
As of October 30, 2026
Save $29,364 USD (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $34,130 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.2ct lab-grown cushion diamond

This 4.2ct 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 LG803623561 or 803623561. Listed at 16 retailers as of October 30, 2026, with prices from $4,766 to $34,130, a $29,364 spread on the same certified stone. Do Amore Diamonds lists it at $34,130. 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

4.20
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803623561
Dimensions9.40 × 9.21 × 6.25 mm
L/W Ratio1.02
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
9.40 mm9.21 mm4.20 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803623561
Side View
Table 61.0%Crown 36°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 67.9%

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 30
Current: $34,130 USD|Low: $4,766 USD|High: $36,910 USD|Avg: $13,127 USD|-7.5%
Do Amore Diamonds
Retailer 2
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Retailer 18
October 30, 2026
Retailer 16$4,766 USD
Retailer 4$5,555 USD
Retailer 7$5,754 USD
Retailer 15$5,780 USD
Retailer 9$6,331 USD
Retailer 11$8,149 USD
Retailer 17$8,301 USD
Retailer 6$9,022 USD
Retailer 13$10,007 USD
Retailer 14$12,993 USD
Retailer 12$13,518 USD
Retailer 10$14,375 USD
Retailer 18$15,837 USD
Retailer 2$17,468 USD
Retailer 8$19,976 USD
Retailer 3$22,497 USD
Retailer 5$29,841 USD
Do Amore Diamonds$34,130 USD

37 data points across 18 retailers

16 retailers$4,766 USD to $34,130 USD

A
Cheapest Retailer
-
$4,766 USD
A
Retailer 2
-
$5,555 USD
View
Final sale: no returns
Retailer 3
-
$5,754 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$5,780 USD
View
A
Retailer 5
-
$8,149 USD
£6,417 GBP
View
A
Retailer 6
-
$8,301 USD
View
B+
Retailer 7
-
$9,022 USD
£7,104 GBP
View
B+
Retailer 8
-
$10,007 USD
€9,530 EUR
View
B+
Retailer 9
-
$12,993 USD
£10,231 GBP
View
B+
Retailer 10
-
$13,518 USD
ZAR 218,377 ZAR
View
B+
Retailer 11
-
$15,837 USD
View
B
Retailer 12
-
$17,468 USD
View
B
Retailer 13
-
$19,976 USD
View
B
Retailer 14
-
$22,497 USD
View
B
Retailer 15
-
$29,841 USD
View
Most Expensive
B
Do Amore Diamonds
27-81A9E32CB · Oct 30
$34,130 USD
View
15 more retailers have this diamond
Prices start from $4,766 USDSave up to $29,364 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
4.20ct Cushion
$4,766 USD