Radiant|Lab Grown|IGI

4.25ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG811634346

Certificate IGI LG811634346

Diamond specifications and retailer prices

From $6,601 USD
Save $19,911 USD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $26,512 USD at With Clarity
View at With Clarity

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 LG811634346 or 811634346. Listed at 11 retailers, with prices from $6,601 to $26,512 at With Clarity, a $19,911 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 angle40.3°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634346
Dimensions11.35 × 8.20 × 5.37 mm
L/W Ratio1.38
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
11.35 mm8.20 mm4.25 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634346
Side View
Table 62.0%Crown 40.3°Girdle: MED-STKPavilion 33.8°Culet: NoneDepth 65.5%

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: Oct 1
Current: $6,601 USD|Low: $4,453 USD|High: $25,982 USD|Avg: $12,600 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
October 1, 2026
Retailer 2$4,453 USD
Retailer 1$6,601 USD
Retailer 7$7,682 USD
Retailer 6$8,066 USD
Retailer 3$8,358 USD
Retailer 11$10,688 USD
Retailer 4$12,750 USD
Retailer 8$13,028 USD
Retailer 10$13,796 USD
Retailer 5$16,793 USD
Retailer 9$22,025 USD
With Clarity$25,982 USD

35 data points across 12 retailers

11 retailers$6,601 USD to $26,512 USD

A
Cheapest Retailer
-
$6,601 USD
A
Retailer 2
-
$7,682 USD
View
A
Retailer 3
-
$8,066 USD
£6,351 GBP
View
B+
Retailer 4
-
$8,358 USD
HK$65,300 HKD
View
B+
Retailer 5
-
$10,688 USD
€10,179 EUR
View
B+
Retailer 6
-
$12,750 USD
£10,039 GBP
View
B+
Retailer 7
-
$13,028 USD
View
B
Retailer 8
-
$13,796 USD
ZAR 222,882 ZAR
View
B
Retailer 9
-
$16,793 USD
View
B
Retailer 10
-
$22,025 USD
View
Most Expensive
B
With Clarity
811634346 · Sep 30
$26,512 USD
View
10 more retailers have this diamond
Prices start from $6,601 USDSave up to $19,911 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
$6,601 USD