Radiant|Lab Grown|IGI

4.26ct D FL Radiant Lab Grown Diamond

Super Ideal • D/FL • IGI LG821641143

Certificate IGI LG821641143

Diamond specifications and retailer prices

From $6,043 USD
Save $29,389 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $35,432 USD at With Clarity
View at With Clarity

About this 4.26ct lab-grown radiant diamond

This 4.26ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG821641143 or 821641143. Listed at 11 retailers, with prices from $6,043 to $35,432 at With Clarity, a $29,389 spread on the same certified stone. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.26
Carat
D
Color
FL
Clarity
Super Ideal
Cut

Specifications

CutSuper Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641143
Dimensions11.47 × 8.14 × 5.29 mm
L/W Ratio1.41
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
11.47 mm8.14 mm4.26 ctD / FL
OriginLab Grown
CutSuper Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641143
Side View
Table 64.0%Crown 42.7°Girdle: Slightly ThickPavilion 34.6°Culet: NoneDepth 65.0%

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: $6,628 USD|Low: $5,828 USD|High: $34,723 USD|Avg: $14,292 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
October 1, 2026
Retailer 9$6,043 USD
Retailer 1$6,628 USD
Retailer 6$7,700 USD
Retailer 5$8,085 USD
Retailer 2$8,384 USD
Retailer 8$10,713 USD
Retailer 3$12,777 USD
Retailer 4$16,832 USD
Retailer 7$22,066 USD
Retailer 10$23,120 USD
With Clarity$34,723 USD

25 data points across 11 retailers

11 retailers$6,043 USD to $35,432 USD

A
Cheapest Retailer
-
$6,043 USD
A
Retailer 2
-
$6,628 USD
View
B+
Retailer 3
-
$7,700 USD
View
B+
Retailer 4
-
$8,085 USD
£6,366 GBP
View
B+
Retailer 5
-
$8,384 USD
HK$65,500 HKD
View
B+
Retailer 6
-
$10,713 USD
€10,203 EUR
View
B
Retailer 7
-
$12,777 USD
£10,061 GBP
View
B
Retailer 8
-
$16,832 USD
View
B
Retailer 9
-
$22,066 USD
View
B
Retailer 10
-
$23,120 USD
View
Most Expensive
C
With Clarity
821641143 · Sep 30
$35,432 USD
View
10 more retailers have this diamond
Prices start from $6,043 USDSave up to $29,389 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
4.26ct Radiant
$6,043 USD