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Radiant|Lab Grown|IGI

4.15ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG803623530

Certificate IGI LG803623530

Diamond specifications and retailer prices

From $5,662 USD
Save $16,059 USD (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $21,721 USD at Taylor and Hart
View at Taylor and Hart

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 LG803623530 or 803623530. Listed at 13 retailers, with prices from $5,662 to $21,721 at Taylor and Hart, a $16,059 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
Crown angle42.6°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803623530
Dimensions11.42 × 7.97 × 5.42 mm
L/W Ratio1.43
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.42 mm7.97 mm4.15 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803623530
Side View
Table 63.0%Crown 42.6°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 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 29
Current: $12,536 USD|Low: $4,574 USD|High: $25,591 USD|Avg: $10,749 USD|-7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Taylor and Hart
September 29, 2026
Retailer 5$5,014 USD
Retailer 11$5,662 USD
Retailer 4$5,877 USD
Retailer 2$6,100 USD
Retailer 13$6,348 USD
Retailer 7$7,909 USD
Retailer 3$8,626 USD
Retailer 6$9,283 USD
Retailer 9$9,284 USD
Retailer 12$9,379 USD
Retailer 1$12,536 USD
Retailer 10$12,803 USD
Retailer 8$12,814 USD
Retailer 14$16,928 USD
Taylor and Hart$21,721 USD

36 data points across 15 retailers

13 retailers$5,662 USD to $21,721 USD

A
Cheapest Retailer
-
$5,662 USD
A
Retailer 2
-
$6,100 USD
View
A
Retailer 3
-
$6,348 USD
View
A
Retailer 4
-
$7,909 USD
£6,228 GBP
View
B+
Retailer 5
-
$8,626 USD
£6,792 GBP
View
B+
Retailer 6
-
$9,283 USD
View
Price last confirmed 45 days ago
B+
Retailer 7
-
$9,284 USD
€8,842 EUR
View
B+
Retailer 8
-
$9,379 USD
View
B+
Retailer 9
-
$12,536 USD
£9,871 GBP
View
B+
Retailer 10
-
$12,803 USD
View
B+
Retailer 11
-
$12,814 USD
View
B
Retailer 12
-
$16,928 USD
View
Most Expensive
B
Taylor and Hart
BYSIILA · Sep 28
$21,721 USD
View
12 more retailers have this diamond
Prices start from $5,662 USDSave up to $16,059 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
$5,662 USD