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Radiant|Lab Grown|IGI

12.56ct F VS1 Radiant Lab Grown Diamond

F/VS1 • IGI LG771603875

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

Certificate IGI LG771603875

Diamond specifications and retailer prices

From $2,179 AUD
£1,203 GBP
As of November 2, 2026
Save $15,914 AUD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $18,107 AUD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 12.56ct lab-grown radiant diamond

This 12.56ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included) and certified by IGI LG771603875 or 771603875. Listed at 26 retailers as of November 2, 2026, with a 730% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

12.56
Carat
F
Colour
VS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771603875
Dimensions11.55 × 11.55 × 7.63 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
11.55 mm11.55 mm12.56 ctF / VS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771603875
Side View
Table 65.0%Crown 42.7°Girdle: Slightly ThickPavilion 39.6°Culet: NoneDepth 66.1%

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: Nov 2
Current: $18,093 AUD|Low: $2,179 AUD|High: $18,107 AUD|Avg: $6,711 AUD|-0.1%
Brilliant Earth
Retailer 2
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Retailer 4
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Retailer 6
Retailer 7
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Retailer 11
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Retailer 15
Retailer 16
Retailer 17
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Retailer 20
Retailer 21
Retailer 22
November 3, 2026
Retailer 18$2,179 AUD
Retailer 7$2,339 AUD
Retailer 19$2,546 AUD
Retailer 12$2,714 AUD
Retailer 3$2,875 AUD
Retailer 8$3,233 AUD
Retailer 2$3,845 AUD
Retailer 16$4,221 AUD
Retailer 17$4,264 AUD
Retailer 14$4,443 AUD
Retailer 13$4,480 AUD
Retailer 21$5,028 AUD
Retailer 20$5,085 AUD
Retailer 11$5,610 AUD
Retailer 6$7,313 AUD
Retailer 15$8,326 AUD
Retailer 9$9,378 AUD
Retailer 10$9,526 AUD
Retailer 5$11,273 AUD
Retailer 22$12,794 AUD
Retailer 4$13,664 AUD
Brilliant Earth$18,093 AUD

30 data points across 22 retailers

26 retailers$2,179 AUD to $18,093 AUD

A
Cheapest Retailer
-
$2,179 AUD
£1,203 GBP
A
Retailer 2
-
$2,339 AUD
$1,639 USD
View
A
Retailer 3
-
$2,546 AUD
$1,784 USD
View
A
Retailer 4
-
$2,714 AUD
$1,902 USD
View
A
Retailer 5
-
$2,875 AUD
$2,015 USD
View
A
Retailer 6
-
$3,046 AUD
$2,135 USD
View
Final sale: no returns
A
Retailer 7
-
$3,233 AUD
HK$17,700 HKD
View
A
Retailer 8
-
$3,845 AUD
£2,122 GBP
View
A
Retailer 9
-
$4,221 AUD
€2,817 EUR
View
B+
Retailer 10
-
$4,264 AUD
$2,988 USD
View
A
Retailer 11
-
$4,443 AUD
ZAR 50,307 ZAR
View
A
Retailer 12
-
$4,480 AUD
$3,140 USD
View
B+
Retailer 13
-
$4,679 AUD
$3,279 USD
View
A
Retailer 14
-
$5,028 AUD
View
B+
Retailer 15
-
$5,085 AUD
$3,564 USD
View
B+
Retailer 16
-
$5,610 AUD
£3,096 GBP
View
B+
Retailer 17
-
$7,226 AUD
$5,064 USD
View
B
Retailer 18
-
$7,313 AUD
$5,125 USD
View
B+
Retailer 19
-
$8,326 AUD
$5,835 USD
View
B
Retailer 20
-
$9,378 AUD
SGD 8,881 SGD
View
B
Retailer 21
-
$9,526 AUD
$6,676 USD
View
B
Retailer 22
-
$11,273 AUD
$7,900 USD
View
B
Retailer 23
-
$12,794 AUD
View
B
Retailer 24
-
$13,664 AUD
$9,576 USD
View
B
Retailer 25
-
$18,093 AUD
$12,680 USD
View
Most Expensive
Brilliant Earth
18438142A · Oct 21
$18,107 AUD
$12,690 USD
View
Price last confirmed 12 days ago
25 more retailers have this diamond
Prices start from $2,179 AUDSave up to $15,914 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
12.56ct Radiant
$2,179 AUD