Cushion|Lab Grown|GIA

4.26ct D FL Cushion Lab Grown Diamond

EX • D/FL • GIA 3515897073

Certificate GIA 3515897073

Diamond specifications and retailer prices

From $18,698 USD
As of October 30, 2026
Save $22,749 USD (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $41,447 USD at Brilliance · As of October 27, 2026
View at Brilliance

About this 4.26ct lab-grown cushion diamond

This 4.26ct 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 stated by the retailer rather than the lab and certified by GIA 3515897073. Listed at 12 retailers as of October 27, 2026, with prices from $18,698 to $41,447, a $22,749 spread on the same certified stone. Brilliance lists it at $41,447. 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

4.26
Carat
D
Color
FL
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 3515897073
Dimensions9.40 × 9.39 × 6.22 mm
L/W Ratio1.00
Culet sizeNone
Top View
9.40 mm9.39 mm4.26 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515897073
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $41,447 USD|Low: $14,175 USD|High: $74,976 USD|Avg: $37,044 USD|-15.2%
Brilliance
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 8$15,090 USD
Retailer 3$18,698 USD
Retailer 11$19,092 USD
Retailer 10$22,778 USD
Retailer 9$25,210 USD
Retailer 7$27,759 USD
Retailer 6$38,341 USD
Brilliance$41,447 USD
Retailer 5$43,628 USD
Retailer 2$54,144 USD
Retailer 12$58,770 USD
Retailer 4$71,227 USD

31 data points across 12 retailers

12 retailers$18,698 USD to $41,447 USD

Retailer 1
-
$15,090 USD
Price last confirmed 11 days ago
B+
Retailer 2
-
$18,698 USD
View
B+
Retailer 3
-
$19,092 USD
View
B+
Retailer 4
-
$22,778 USD
View
B+
Retailer 5
-
$25,210 USD
View
Retailer 6
-
$27,759 USD
£21,858 GBP
View
Price last confirmed 7 days ago
B
Retailer 7
-
$38,341 USD
£30,190 GBP
View
Most Expensive
B
Brilliance
D42114110 · Oct 27
$41,447 USD
View
7 more retailers have this diamond
Prices start from $18,698 USDSave up to $22,749 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.

B+
4.26ct Cushion
$18,698 USD