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Radiant|Lab Grown|IGI

1.39ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825659912

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG825659912

Diamond specifications and retailer prices

From $354 USD
As of October 28, 2026
Save $3,776 USD (91%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,130 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.39ct lab-grown radiant diamond

This 1.39ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825659912 or 825659912. Listed at 19 retailers as of October 28, 2026, with prices from $354 to $4,130, a $3,776 spread on the same certified stone. Brilliant Earth lists it at $4,130. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.39
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825659912
Dimensions7.66 × 5.58 × 3.89 mm
L/W Ratio1.37
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
7.66 mm5.58 mm1.39 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825659912
Side View
Table 61.0%Crown 40.9°Girdle: MediumPavilion 38.3°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $4,130 USD|Low: $330 USD|High: $4,140 USD|Avg: $1,277 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
October 30, 2026
Retailer 9$354 USD
Retailer 14$525 USD
Retailer 11$604 USD
Retailer 8$633 USD
Retailer 2$652 USD
Retailer 4$684 USD
Retailer 13$998 USD
Retailer 10$1,133 USD
Retailer 5$1,154 USD
Retailer 12$1,233 USD
Retailer 6$1,361 USD
Retailer 7$1,485 USD
Retailer 3$3,130 USD
Brilliant Earth$4,130 USD

30 data points across 14 retailers

19 retailers$354 USD to $4,130 USD

A
Cheapest Retailer
-
$354 USD
Final sale: no returns
Retailer 2
-
$394 USD
View
Price last confirmed 27 days ago
Retailer 3
-
$460 USD
View
Price last confirmed 32 days ago
Retailer 4
-
$509 USD
View
Price last confirmed 26 days ago
A
Retailer 5
-
$525 USD
View
A
Retailer 6
-
$604 USD
View
A
Retailer 7
-
$633 USD
ZAR 10,234 ZAR
View
A
Retailer 8
-
$652 USD
£514 GBP
View
A
Retailer 9
-
$684 USD
€651 EUR
View
B+
Retailer 10
-
$998 USD
View
B+
Retailer 11
-
$1,133 USD
View
B+
Retailer 12
-
$1,154 USD
View
B+
Retailer 13
-
$1,233 USD
View
B+
Retailer 14
-
$1,361 USD
SGD 1,839 SGD
View
B+
Retailer 15
-
$1,485 USD
£1,169 GBP
View
Retailer 16
-
$1,636 USD
View
Price last confirmed 29 days ago
Retailer 17
-
$3,125 USD
View
Price last confirmed 8 days ago
Retailer 18
-
$3,130 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21418725A · Oct 29
$4,130 USD
View
18 more retailers have this diamond
Prices start from $354 USDSave up to $3,776 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.39ct Radiant
$354 USD