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Radiant|Lab Grown|IGI

1.39ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG799639038

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

Certificate IGI LG799639038

Diamond specifications and retailer prices

From $494 AUD
$347 USD
As of October 30, 2026
Save $3,065 AUD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $4,612 AUD at Brilliant Earth · As of September 28, 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799639038 or 799639038. Listed at 22 retailers as of October 30, 2026, with a 620% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.39
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799639038
Dimensions7.80 × 5.36 × 3.71 mm
L/W Ratio1.46
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
7.80 mm5.36 mm1.39 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799639038
Side View
Table 66.0%Crown 45.9°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 69.2%

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 30
Current: $3,559 AUD|Low: $467 AUD|High: $4,612 AUD|Avg: $1,762 AUD|-22.8%
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
October 30, 2026
Retailer 11$494 AUD
Retailer 8$709 AUD
Retailer 3$740 AUD
Retailer 15$847 AUD
Retailer 13$880 AUD
Retailer 10$889 AUD
Retailer 2$914 AUD
Retailer 4$957 AUD
Retailer 17$1,452 AUD
Retailer 14$1,589 AUD
Retailer 6$1,610 AUD
Retailer 16$1,732 AUD
Retailer 7$1,895 AUD
Retailer 9$2,061 AUD
Retailer 12$2,076 AUD
Brilliant Earth$3,559 AUD
Retailer 5$4,015 AUD

30 data points across 17 retailers

22 retailers$494 AUD to $3,559 AUD

A
Cheapest Retailer
-
$494 AUD
$347 USD
Final sale: no returns
Retailer 2
-
$548 AUD
$385 USD
View
Price last confirmed 28 days ago
Retailer 3
-
$641 AUD
$450 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$709 AUD
$498 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
$740 AUD
$520 USD
View
A
Retailer 6
-
$847 AUD
$595 USD
View
A
Retailer 7
-
$880 AUD
$618 USD
View
A
Retailer 8
-
$889 AUD
ZAR 10,084 ZAR
View
A
Retailer 9
-
$914 AUD
£505 GBP
View
Retailer 10
-
$957 AUD
€640 EUR
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$1,452 AUD
$1,020 USD
View
Retailer 12
-
$1,559 AUD
$1,095 USD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
$1,589 AUD
$1,116 USD
View
B+
Retailer 14
-
$1,610 AUD
$1,131 USD
View
B+
Retailer 15
-
$1,732 AUD
$1,216 USD
View
B+
Retailer 16
-
$1,895 AUD
SGD 1,799 SGD
View
Retailer 17
-
$2,061 AUD
£1,140 GBP
View
Price last confirmed 26 days ago
B+
Retailer 18
-
$2,076 AUD
£1,148 GBP
View
Retailer 19
-
$2,278 AUD
$1,600 USD
View
Price last confirmed 30 days ago
B
Retailer 20
-
$3,559 AUD
$2,500 USD
View
Retailer 21
-
$4,015 AUD
$2,820 USD
View
Price last confirmed 12 days ago
Most Expensive
Brilliant Earth
20485125A · Sep 28
$4,612 AUD
$3,240 USD
View
Price last confirmed 32 days ago
21 more retailers have this diamond
Prices start from $494 AUDSave up to $3,065 AUD

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
$494 AUD