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Radiant|Lab Grown|IGI

4.26ct D IF Radiant Lab Grown Diamond

ID • D/IF

Diamond specifications and retailer prices

From $3,716 USD
£2,926 GBP
Save $7,626 USD (67%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $11,342 USD at Blue Nile
View at Blue Nile

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 2 retailers, with prices from $3,716 to $11,342 at Blue Nile, a $7,626 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions11.33 × 8.18 × 5.40 mm
L/W Ratio1.39
Top View
11.33 mm8.18 mm4.26 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 61.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 66.0%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $11,342 USD|Low: $3,101 USD|High: $17,929 USD|Avg: $7,748 USD|-36.7%
Blue Nile
Retailer 2
Retailer 3
October 1, 2026
Retailer 3$3,101 USD
Retailer 2$3,716 USD
Blue Nile$11,342 USD

25 data points across 3 retailers

2 retailers$3,716 USD to $11,342 USD

A
Cheapest Retailer
-
$3,716 USD
£2,926 GBP
Most Expensive
B
Blue Nile
24062890 · Sep 29
$11,342 USD
View
1 more retailer has this diamond
Prices start from $3,716 USDSave up to $7,626 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
$3,716 USD