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Radiant|Lab Grown|IGI

5.21ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG784644229

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG784644229

Diamond specifications and retailer prices

From €8,213 EUR
$9,176 USD
As of October 30, 2026
Save €18,334 EUR (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €26,547 EUR at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 5.21ct lab-grown radiant diamond

This 5.21ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784644229 or 784644229. Listed at 15 retailers as of October 30, 2026, with prices from €8,213 to €26,547, a €18,334 spread on the same certified stone. Frank Darling lists it at €26,547. 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

5.21
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784644229
Dimensions12.05 × 8.70 × 5.77 mm
L/W Ratio1.39
Culet sizePointed
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
12.05 mm8.70 mm5.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784644229
Side View
Table 63.0%Crown 40.1°Girdle: ThickPavilion 34.5°Culet: NoneDepth 66.3%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: €26,547 EUR|Low: €8,213 EUR|High: €55,460 EUR|Avg: €16,222 EUR|-12.5%
Frank Darling
Retailer 2
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Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
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Retailer 15
October 31, 2026
Retailer 11€8,213 EUR
Retailer 13€8,262 EUR
Retailer 6€8,369 EUR
Retailer 5€8,542 EUR
Retailer 3€9,430 EUR
Retailer 4€9,856 EUR
Retailer 14€10,430 EUR
Retailer 10€10,947 EUR
Retailer 12€11,019 EUR
Retailer 7€11,084 EUR
Retailer 8€15,700 EUR
Retailer 9€16,984 EUR
Retailer 2€18,595 EUR
Frank Darling€26,547 EUR
Retailer 15€51,253 EUR

39 data points across 15 retailers

15 retailers€8,213 EUR to €26,547 EUR

A+
Cheapest Retailer
-
€8,213 EUR
$9,176 USD
A
Retailer 2
-
€8,262 EUR
$9,230 USD
View
A
Retailer 3
-
€8,369 EUR
$9,350 USD
View
A
Retailer 4
-
€8,542 EUR
$9,543 USD
View
A
Retailer 5
-
€9,430 EUR
$10,535 USD
View
A
Retailer 6
-
€9,856 EUR
$11,011 USD
View
A
Retailer 7
-
€10,430 EUR
$11,652 USD
View
A
Retailer 8
-
€10,947 EUR
$12,230 USD
View
A
Retailer 9
-
€11,019 EUR
$12,310 USD
View
A
Retailer 10
-
€11,084 EUR
$12,383 USD
View
Final sale: no returns
A
Retailer 11
-
€15,700 EUR
$17,540 USD
View
A
Retailer 12
-
€16,984 EUR
£14,941 GBP
View
B+
Retailer 13
-
€18,595 EUR
View
Most Expensive
B+
Frank Darling
P83F-17EL · Oct 31
€26,547 EUR
$29,659 USD
View
13 more retailers have this diamond
Prices start from €8,213 EURSave up to €18,334 EUR

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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A+
5.21ct Radiant
€8,213 EUR