Radiant|Lab Grown|IGI

4.26ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG766683669

Certificate IGI LG766683669

Diamond specifications and retailer prices

From $4,578 USD
Save $16,442 USD (78%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $21,020 USD at Brilliant Earth
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG766683669 or 766683669. Listed at 20 retailers, with a 359% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.26
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766683669
Dimensions8.18 × 8.18 × 11.94 mm
L/W Ratio1.00
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
8.18 mm8.18 mm4.26 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766683669
Side View
Table 67.0%Crown 39.6°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 63.4%

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: Oct 1
Current: $21,020 USD|Low: $3,269 USD|High: $21,070 USD|Avg: $9,213 USD|-0.2%
Brilliant Earth
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
Retailer 17
Retailer 18
October 1, 2026
Retailer 5$4,578 USD
Retailer 3$4,580 USD
Retailer 8$4,795 USD
Retailer 14$5,816 USD
Retailer 9$6,186 USD
Retailer 12$6,399 USD
Retailer 6$6,660 USD
Retailer 7$6,954 USD
Retailer 11$7,344 USD
Retailer 17$7,513 USD
Retailer 13$9,910 USD
Retailer 16$10,281 USD
Retailer 15$10,343 USD
Retailer 4$12,450 USD
Retailer 2$15,015 USD
Retailer 18$16,227 USD
Retailer 10$16,849 USD
Brilliant Earth$21,020 USD

38 data points across 18 retailers

20 retailers$4,578 USD to $21,020 USD

A
Cheapest Retailer
-
$4,578 USD
A
Retailer 2
-
$4,580 USD
View
A
Retailer 3
-
$4,795 USD
View
A
Retailer 4
-
$5,816 USD
View
A
Retailer 5
-
$6,186 USD
View
A
Retailer 6
-
$6,413 USD
£5,050 GBP
View
A
Retailer 7
-
$6,660 USD
£5,244 GBP
View
A
Retailer 8
-
$6,954 USD
View
Price last confirmed 31 days ago
A
Retailer 9
-
$7,344 USD
View
A
Retailer 10
-
$7,513 USD
€7,155 EUR
View
B+
Retailer 11
-
$9,873 USD
View
B+
Retailer 12
-
$9,910 USD
ZAR 160,099 ZAR
View
B+
Retailer 13
-
$10,281 USD
£8,095 GBP
View
B+
Retailer 14
-
$10,343 USD
A$15,912 AUD
View
B+
Retailer 15
-
$12,450 USD
View
B
Retailer 16
-
$15,015 USD
A$23,100 AUD
View
B
Retailer 17
-
$16,227 USD
SGD 21,929 SGD
View
B
Retailer 18
-
$16,849 USD
View
B
Retailer 19
-
$21,020 USD
View
Most Expensive
B
Brilliant Earth
17359880A · Sep 16
$21,020 USD
View
Price last confirmed 15 days ago
19 more retailers have this diamond
Prices start from $4,578 USDSave up to $16,442 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
$4,578 USD