Radiant|Lab Grown|IGI

4.25ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804664642

Certificate IGI LG804664642

Diamond specifications and retailer prices

From $4,875 USD
Save $18,195 USD (79%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $23,070 USD at Brilliant Earth
View at Brilliant Earth

About this 4.25ct lab-grown radiant diamond

This 4.25ct 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 LG804664642 or 804664642. Listed at 7 retailers, with prices from $4,875 to $23,070 at Brilliant Earth, a $18,195 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

4.25
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804664642
Dimensions11.27 × 7.96 × 5.51 mm
L/W Ratio1.42
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
11.27 mm7.96 mm4.25 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804664642
Side View
Table 61.0%Crown 39.7°Girdle: Slightly ThickPavilion 36.2°Culet: NoneDepth 69.2%

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: $23,070 USD|Low: $4,740 USD|High: $27,060 USD|Avg: $10,694 USD|-14.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 29, 2026
Retailer 3$4,875 USD
Retailer 5$4,877 USD
Retailer 6$7,190 USD
Retailer 7$8,520 USD
Retailer 4$9,351 USD
Retailer 2$11,991 USD
Retailer 8$14,792 USD
Brilliant Earth$23,070 USD

9 data points across 8 retailers

7 retailers$4,875 USD to $23,070 USD

A
Cheapest Retailer
-
$4,875 USD
A
Retailer 2
-
$4,877 USD
View
A
Retailer 3
-
$7,190 USD
View
B+
Retailer 4
-
$8,520 USD
View
B+
Retailer 5
-
$9,351 USD
€8,906 EUR
View
B+
Retailer 6
-
$11,991 USD
£9,442 GBP
View
Most Expensive
B
Brilliant Earth
20496231Y · Oct 1
$23,070 USD
View
6 more retailers have this diamond
Prices start from $4,875 USDSave up to $18,195 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
4.25ct Radiant
$4,875 USD