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Radiant|Lab Grown|IGI

15.09ct F VS1 Radiant Lab Grown Diamond

EX • F/VS1 • IGI LG758559978

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

Certificate IGI LG758559978

Diamond specifications and retailer prices

From $4,006 NZD
£1,775 GBP
As of November 2, 2026
Save $22,938 NZD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $26,944 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 15.09ct lab-grown radiant diamond

This 15.09ct 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 LG758559978 or 758559978. Listed at 19 retailers as of November 2, 2026, with prices from $4,006 to $26,944, a $22,938 spread on the same certified stone. Brilliant Earth lists it at $26,944. 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

15.09
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle23.9°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758559978
Dimensions12.40 × 12.40 × 7.95 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.40 mm12.40 mm15.09 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758559978
Side View
Table 61.0%Crown 23.9°Girdle: Slightly ThickPavilion 32.5°Culet: NoneDepth 64.1%

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: $26,944 NZD|Low: $4,006 NZD|High: $27,779 NZD|Avg: $12,749 NZD|-3.0%
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
Retailer 18
Retailer 19
November 3, 2026
Retailer 14$4,006 NZD
Retailer 15$4,678 NZD
Retailer 9$4,815 NZD
Retailer 17$4,987 NZD
Retailer 5$5,998 NZD
Retailer 4$6,789 NZD
Retailer 19$6,857 NZD
Retailer 12$6,870 NZD
Retailer 13$7,253 NZD
Retailer 11$7,532 NZD
Retailer 2$7,729 NZD
Retailer 3$7,967 NZD
Retailer 16$9,242 NZD
Retailer 10$11,508 NZD
Retailer 7$14,024 NZD
Retailer 8$17,411 NZD
Retailer 18$19,138 NZD
Retailer 6$25,407 NZD
Brilliant Earth$26,944 NZD

28 data points across 19 retailers

19 retailers$4,006 NZD to $26,944 NZD

A
Cheapest Retailer
-
$4,006 NZD
£1,775 GBP
A
Retailer 2
-
$4,678 NZD
$2,632 USD
View
A
Retailer 3
-
$4,815 NZD
$2,709 USD
View
Final sale: no returns
A
Retailer 4
-
$4,987 NZD
$2,806 USD
View
A
Retailer 5
-
$5,998 NZD
$3,375 USD
View
A
Retailer 6
-
$6,789 NZD
$3,820 USD
View
A
Retailer 7
-
$6,857 NZD
$3,858 USD
View
A
Retailer 8
-
$6,870 NZD
£3,044 GBP
View
A
Retailer 9
-
$7,253 NZD
$4,081 USD
View
B+
Retailer 10
-
$7,532 NZD
$4,238 USD
View
A
Retailer 11
-
$7,729 NZD
ZAR 70,252 ZAR
View
A
Retailer 12
-
$7,967 NZD
€4,269 EUR
View
B+
Retailer 13
-
$9,242 NZD
A$8,000 AUD
View
Retailer 14
-
$11,508 NZD
$6,475 USD
View
Price last confirmed 15 days ago
B+
Retailer 15
-
$14,024 NZD
$7,891 USD
View
B
Retailer 16
-
$17,411 NZD
$9,797 USD
View
B
Retailer 17
-
$19,138 NZD
A$16,566 AUD
View
B
Retailer 18
-
$25,407 NZD
$14,295 USD
View
Most Expensive
B
Brilliant Earth
18212470A · Nov 2
$26,944 NZD
$15,160 USD
View
18 more retailers have this diamond
Prices start from $4,006 NZDSave up to $22,938 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
15.09ct Radiant
$4,006 NZD