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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 $4,260 NZD
$2,397 USD
As of November 2, 2026
Save $25,047 NZD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $41,731 NZD 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: $8,248 NZD|Low: $3,631 NZD|High: $29,308 NZD|Avg: $9,371 NZD|+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$3,631 NZD
Retailer 10$4,381 NZD
Retailer 9$5,072 NZD
Retailer 4$5,232 NZD
Retailer 7$5,442 NZD
Retailer 13$5,901 NZD
Retailer 16$6,942 NZD
Retailer 17$7,091 NZD
Retailer 5$7,232 NZD
Retailer 2$7,410 NZD
Retailer 1$8,248 NZD
Retailer 11$10,107 NZD
Retailer 8$11,506 NZD
Retailer 6$12,279 NZD
Retailer 14$13,840 NZD
Retailer 12$16,291 NZD
Retailer 15$29,308 NZD

11 data points across 17 retailers

12 retailers$4,260 NZD to $29,308 NZD

A
Cheapest Retailer
-
$4,260 NZD
$2,397 USD
A
Retailer 2
-
$4,381 NZD
£1,941 GBP
View
A
Retailer 3
-
$5,901 NZD
$3,320 USD
View
A
Retailer 4
-
$6,942 NZD
$3,906 USD
View
A
Retailer 5
-
$7,091 NZD
$3,990 USD
View
B+
Retailer 6
-
$7,410 NZD
$4,169 USD
View
B+
Retailer 7
-
$8,248 NZD
€4,420 EUR
View
B+
Retailer 8
-
$10,107 NZD
A$8,749 AUD
View
B
Retailer 9
-
$13,840 NZD
$7,787 USD
View
B
Retailer 10
-
$16,291 NZD
A$14,102 AUD
View
B
Retailer 11
-
$29,308 NZD
$16,490 USD
View
Most Expensive
Brilliant Earth
22300729A · Nov 2
$41,731 NZD
$23,480 USD
View
Price under review
11 more retailers have this diamond
Prices start from $4,260 NZDSave up to $25,047 NZD

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
$4,260 NZD