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Radiant|Lab Grown|IGI

4.15ct D FL Radiant Lab Grown Diamond

EX • D/FL

Diamond specifications and retailer prices

From $5,500 USD
Save $17,205 USD (76%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $22,705 USD at Helzberg Diamonds
View at Helzberg Diamonds

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 4 retailers, with prices from $5,500 to $22,705 at Helzberg Diamonds, a $17,205 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions11.42 × 7.97 × 5.42 mm
L/W Ratio1.43
Top View
11.42 mm7.97 mm4.15 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 63.0%CrownGirdle: Slightly ThickPavilionCuletDepth 68.0%

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: Sep 27
Current: $22,705 USD|Low: $5,500 USD|High: $26,153 USD|Avg: $14,713 USD|-13.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
September 27, 2026
Retailer 2$5,500 USD
Retailer 4$6,003 USD
Retailer 3$6,087 USD
Helzberg Diamonds$22,705 USD

6 data points across 4 retailers

4 retailers$5,500 USD to $22,705 USD

A
Cheapest Retailer
-
$5,500 USD
A
Retailer 2
-
$6,003 USD
View
A
Retailer 3
-
$6,087 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOGJMIJLJG · Sep 27
$22,705 USD
View
3 more retailers have this diamond
Prices start from $5,500 USDSave up to $17,205 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
$5,500 USD