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Radiant|Lab Grown|IGI

4.15ct D FL Radiant Lab Grown Diamond

ID • D/FL

Diamond specifications and retailer prices

From $4,482 USD
Save $2,331 USD (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $6,813 USD at NZ Jewellers
View at NZ Jewellers

About this 4.15ct lab-grown radiant diamond

This 4.15ct lab-grown radiant 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. Listed at 3 retailers, with prices from $4,482 to $6,813 at NZ Jewellers, a $2,331 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

4.15
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions11.43 × 8.16 × 5.42 mm
L/W Ratio1.40
Top View
11.43 mm8.16 mm4.15 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 65.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.4%

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: Sep 30
Current: $6,813 USD|Low: $4,482 USD|High: $17,653 USD|Avg: $9,695 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 30, 2026
Retailer 2$4,482 USD
Retailer 3$4,697 USD
NZ Jewellers$6,813 USD
Retailer 6$7,410 USD
Retailer 5$10,053 USD
Retailer 4$17,653 USD

3 data points across 6 retailers

3 retailers$4,482 USD to $6,813 USD

A
Cheapest Retailer
-
$4,482 USD
A
Retailer 2
-
$4,697 USD
View
Most Expensive
B+
NZ Jewellers
f25fd392-e00a-4e30-9959-ae4042490ac4 · Sep 30
$6,813 USD
View
2 more retailers have this diamond
Prices start from $4,482 USDSave up to $2,331 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
4.15ct Radiant
$4,482 USD