Radiant|Lab Grown|IGI

4.21ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG744514471

Certificate IGI LG744514471

Diamond specifications and retailer prices

From $4,781 USD
Save $25,869 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $30,650 USD at Do Amore Diamonds
View at Do Amore Diamonds

About this 4.21ct lab-grown radiant diamond

This 4.21ct 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 LG744514471 or 744514471. Listed at 12 retailers, with prices from $4,781 to $30,650 at Do Amore Diamonds, a $25,869 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

4.21
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.3°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514471
Dimensions11.29 × 8.02 × 5.22 mm
L/W Ratio1.41
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
11.29 mm8.02 mm4.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514471
Side View
Table 66.0%Crown 28.3°Girdle: ThickPavilion 33.6°Culet: NoneDepth 65.1%

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 30
Current: $30,650 USD|Low: $3,930 USD|High: $33,800 USD|Avg: $13,845 USD|-9.3%
Do Amore Diamonds
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
Retailer 15
Retailer 16
October 1, 2026
Retailer 13$4,781 USD
Retailer 14$4,784 USD
Retailer 12$5,210 USD
Retailer 3$5,502 USD
Retailer 15$7,038 USD
Retailer 9$7,128 USD
Retailer 16$8,450 USD
Retailer 2$9,252 USD
Retailer 8$11,056 USD
Retailer 10$11,748 USD
Retailer 11$14,257 USD
Retailer 6$19,404 USD
Retailer 4$22,850 USD
Retailer 7$27,745 USD
Retailer 5$29,150 USD
Do Amore Diamonds$30,650 USD

18 data points across 16 retailers

12 retailers$4,781 USD to $30,650 USD

A
Cheapest Retailer
-
$4,781 USD
A
Retailer 2
-
$4,784 USD
View
A
Retailer 3
-
$5,210 USD
View
A
Retailer 4
-
$5,502 USD
View
A
Retailer 5
-
$7,038 USD
View
A
Retailer 6
-
$7,128 USD
View
B+
Retailer 7
-
$8,450 USD
View
B+
Retailer 8
-
$9,252 USD
€8,811 EUR
View
B+
Retailer 9
-
$11,748 USD
£9,250 GBP
View
B+
Retailer 10
-
$14,257 USD
View
B
Retailer 11
-
$22,850 USD
View
Most Expensive
B
Do Amore Diamonds
27-04C66B702 · Sep 30
$30,650 USD
View
11 more retailers have this diamond
Prices start from $4,781 USDSave up to $25,869 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
4.21ct Radiant
$4,781 USD