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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 $3,216 AUD
£1,775 GBP
As of November 2, 2026
Save $18,416 AUD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $21,632 AUD 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 $3,216 to $21,632, a $18,416 spread on the same certified stone. Brilliant Earth lists it at $21,632. 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: $21,632 AUD|Low: $3,216 AUD|High: $22,302 AUD|Avg: $10,235 AUD|-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 13$3,216 AUD
Retailer 14$3,756 AUD
Retailer 9$3,865 AUD
Retailer 16$4,004 AUD
Retailer 5$4,816 AUD
Retailer 3$5,451 AUD
Retailer 18$5,505 AUD
Retailer 2$5,516 AUD
Retailer 12$5,823 AUD
Retailer 11$6,047 AUD
Retailer 4$6,199 AUD
Retailer 19$6,396 AUD
Retailer 15$7,420 AUD
Retailer 10$9,239 AUD
Retailer 7$11,259 AUD
Retailer 8$13,979 AUD
Retailer 17$15,365 AUD
Retailer 6$20,398 AUD
Brilliant Earth$21,632 AUD

28 data points across 19 retailers

19 retailers$3,216 AUD to $21,632 AUD

A
Cheapest Retailer
-
$3,216 AUD
£1,775 GBP
A
Retailer 2
-
$3,756 AUD
$2,632 USD
View
A
Retailer 3
-
$3,865 AUD
$2,709 USD
View
Final sale: no returns
A
Retailer 4
-
$4,004 AUD
$2,806 USD
View
A
Retailer 5
-
$4,816 AUD
$3,375 USD
View
A
Retailer 6
-
$5,451 AUD
$3,820 USD
View
A
Retailer 7
-
$5,505 AUD
$3,858 USD
View
A
Retailer 8
-
$5,516 AUD
£3,044 GBP
View
A
Retailer 9
-
$5,823 AUD
$4,081 USD
View
B+
Retailer 10
-
$6,047 AUD
$4,238 USD
View
A
Retailer 11
-
$6,199 AUD
ZAR 70,188 ZAR
View
A
Retailer 12
-
$6,396 AUD
€4,269 EUR
View
B+
Retailer 13
-
$7,420 AUD
View
Retailer 14
-
$9,239 AUD
$6,475 USD
View
Price last confirmed 15 days ago
B+
Retailer 15
-
$11,259 AUD
$7,891 USD
View
B
Retailer 16
-
$13,979 AUD
$9,797 USD
View
B
Retailer 17
-
$15,365 AUD
View
B
Retailer 18
-
$20,398 AUD
$14,295 USD
View
Most Expensive
B
Brilliant Earth
18212470A · Nov 2
$21,632 AUD
$15,160 USD
View
18 more retailers have this diamond
Prices start from $3,216 AUDSave up to $18,416 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
15.09ct Radiant
$3,216 AUD