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Radiant|Lab Grown|IGI

12.39ct F VS1 Radiant Lab Grown Diamond

EX • F/VS1 • IGI LG743507511

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

Certificate IGI LG743507511

Diamond specifications and retailer prices

From $3,420 AUD
$2,397 USD
As of November 2, 2026
Save $20,109 AUD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $33,504 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 12.39ct lab-grown radiant diamond

This 12.39ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG743507511 or 743507511. Listed at 12 retailers as of November 2, 2026, with a 588% 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

12.39
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743507511
Dimensions11.37 × 11.37 × 7.60 mm
L/W Ratio1.00
Culet sizePointed
Top View
11.37 mm11.37 mm12.39 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743507511
Side View
Table 65.0%Crown 46.1°Girdle: MediumPavilion 34.9°Culet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $6,622 AUD|Low: $2,915 AUD|High: $23,530 AUD|Avg: $7,524 AUD|+0.2%
Retailer 1
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
November 2, 2026
Retailer 3$2,915 AUD
Retailer 10$3,517 AUD
Retailer 9$4,072 AUD
Retailer 4$4,200 AUD
Retailer 7$4,369 AUD
Retailer 13$4,737 AUD
Retailer 16$5,573 AUD
Retailer 17$5,693 AUD
Retailer 5$5,806 AUD
Retailer 2$5,949 AUD
Retailer 1$6,622 AUD
Retailer 11$8,115 AUD
Retailer 8$9,238 AUD
Retailer 6$9,859 AUD
Retailer 14$11,111 AUD
Retailer 12$13,079 AUD
Retailer 15$23,530 AUD

11 data points across 17 retailers

12 retailers$3,420 AUD to $23,530 AUD

A
Cheapest Retailer
-
$3,420 AUD
$2,397 USD
A
Retailer 2
-
$3,517 AUD
£1,941 GBP
View
A
Retailer 3
-
$4,737 AUD
$3,320 USD
View
A
Retailer 4
-
$5,573 AUD
$3,906 USD
View
A
Retailer 5
-
$5,693 AUD
$3,990 USD
View
B+
Retailer 6
-
$5,949 AUD
$4,169 USD
View
B+
Retailer 7
-
$6,622 AUD
€4,420 EUR
View
B+
Retailer 8
-
$8,115 AUD
View
B
Retailer 9
-
$11,111 AUD
$7,787 USD
View
B
Retailer 10
-
$13,079 AUD
View
B
Retailer 11
-
$23,530 AUD
$16,490 USD
View
Most Expensive
Brilliant Earth
22300729A · Nov 2
$33,504 AUD
$23,480 USD
View
Price under review
11 more retailers have this diamond
Prices start from $3,420 AUDSave up to $20,109 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
12.39ct Radiant
$3,420 AUD