Radiant|Lab Grown|IGI

1.39ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG750596123

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

Certificate IGI LG750596123

Diamond specifications and retailer prices

From $262 USD
As of October 30, 2026
Save $2,238 USD (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,500 USD at Brilliant Earth · As of October 30, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG750596123 or 750596123. Listed at 23 retailers as of October 30, 2026, with prices from $262 to $2,500, a $2,238 spread on the same certified stone. Brilliant Earth lists it at $2,500. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750596123
Dimensions8.20 × 5.46 × 3.68 mm
L/W Ratio1.50
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
8.20 mm5.46 mm1.39 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750596123
Side View
Table 67.0%Crown 43.4°Girdle: MediumPavilion 35.3°Culet: NoneDepth 67.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,500 USD|Low: $293 USD|High: $2,920 USD|Avg: $912 USD|-14.1%
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
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Retailer 19
October 30, 2026
Retailer 6$293 USD
Retailer 16$304 USD
Retailer 3$358 USD
Retailer 15$485 USD
Retailer 19$533 USD
Retailer 7$542 USD
Retailer 14$559 USD
Retailer 5$583 USD
Retailer 2$622 USD
Retailer 13$791 USD
Retailer 4$986 USD
Retailer 17$999 USD
Retailer 10$1,046 USD
Retailer 11$1,096 USD
Retailer 8$1,265 USD
Retailer 12$1,309 USD
Retailer 9$1,392 USD
Retailer 18$1,850 USD
Brilliant Earth$2,500 USD

41 data points across 19 retailers

23 retailers$262 USD to $2,500 USD

A
Cheapest Retailer
-
$262 USD
A
Retailer 2
-
$293 USD
View
Final sale: no returns
A
Retailer 3
-
$304 USD
View
A
Retailer 4
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$325 USD
View
A
Retailer 5
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$325 USD
View
A
Retailer 6
-
$358 USD
HK$2,800 HKD
View
A
Retailer 7
-
$485 USD
View
A
Retailer 8
-
$533 USD
€508 EUR
View
A
Retailer 9
-
$542 USD
View
A
Retailer 10
-
$559 USD
ZAR 9,024 ZAR
View
A
Retailer 11
-
$583 USD
View
A
Retailer 12
-
$622 USD
£490 GBP
View
A
Retailer 13
-
$791 USD
A$1,217 AUD
View
B+
Retailer 14
-
$986 USD
View
B+
Retailer 15
-
$999 USD
View
B+
Retailer 16
-
$1,045 USD
View
B+
Retailer 17
-
$1,046 USD
SGD 1,414 SGD
View
B+
Retailer 18
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$1,096 USD
View
B+
Retailer 19
-
$1,265 USD
£996 GBP
View
B+
Retailer 20
-
$1,309 USD
£1,031 GBP
View
B
Retailer 21
-
$1,392 USD
View
Retailer 22
-
$1,850 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
19055672A · Oct 30
$2,500 USD
View
22 more retailers have this diamond
Prices start from $262 USDSave up to $2,238 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
$262 USD