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Radiant|Lab Grown|IGI

4.26ct D IF Radiant Lab Grown Diamond

EX • D/IF

Diamond specifications and retailer prices

From $4,352 USD
£3,427 GBP
Save $2,117 USD (33%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,469 USD at NZ Jewellers
View at NZ Jewellers

About this 4.26ct lab-grown radiant diamond

This 4.26ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI. Listed at 6 retailers, with prices from $4,352 to $6,469 at NZ Jewellers, a $2,117 spread on the same certified stone. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions10.51 × 7.92 × 5.25 mm
L/W Ratio1.33
Top View
10.51 mm7.92 mm4.26 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 1
Current: $6,469 USD|Low: $3,848 USD|High: $6,542 USD|Avg: $4,939 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 1, 2026
Retailer 7$3,848 USD
Retailer 2$4,352 USD
Retailer 3$4,463 USD
Retailer 4$4,677 USD
Retailer 6$5,106 USD
Retailer 5$5,177 USD
NZ Jewellers$6,469 USD
Retailer 8$6,542 USD

33 data points across 8 retailers

6 retailers$4,352 USD to $6,469 USD

A
Cheapest Retailer
-
$4,352 USD
£3,427 GBP
A
Retailer 2
-
$4,463 USD
View
A
Retailer 3
-
$4,677 USD
View
A
Retailer 4
-
$5,106 USD
View
A
Retailer 5
-
$5,177 USD
View
Most Expensive
B+
NZ Jewellers
288c57a5-3e59-4bae-914e-0110b2a942bd · Sep 30
$6,469 USD
View
5 more retailers have this diamond
Prices start from $4,352 USDSave up to $2,117 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.

A
4.26ct Radiant
$4,352 USD