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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 $2,714 NZD
£1,203 GBP
As of November 2, 2026
Save $19,822 NZD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $22,554 NZD 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

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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: $22,536 NZD|Low: $2,714 NZD|High: $22,554 NZD|Avg: $8,263 NZD|-0.1%
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
Retailer 20
Retailer 21
Retailer 22
November 2, 2026
Retailer 17$2,714 NZD
Retailer 7$2,913 NZD
Retailer 19$3,171 NZD
Retailer 12$3,380 NZD
Retailer 3$3,581 NZD
Retailer 8$4,027 NZD
Retailer 18$4,750 NZD
Retailer 13$5,257 NZD
Retailer 16$5,311 NZD
Retailer 14$5,535 NZD
Retailer 2$5,581 NZD
Retailer 21$6,263 NZD
Retailer 20$6,334 NZD
Retailer 11$6,988 NZD
Retailer 6$9,109 NZD
Retailer 15$10,371 NZD
Retailer 9$11,680 NZD
Retailer 10$11,865 NZD
Retailer 5$14,041 NZD
Retailer 22$15,935 NZD
Retailer 4$17,019 NZD
Brilliant Earth$22,536 NZD

29 data points across 22 retailers

26 retailers$2,714 NZD to $22,536 NZD

A
Cheapest Retailer
-
$2,714 NZD
£1,203 GBP
A
Retailer 2
-
$2,913 NZD
$1,639 USD
View
A
Retailer 3
-
$3,171 NZD
$1,784 USD
View
A
Retailer 4
-
$3,380 NZD
$1,902 USD
View
A
Retailer 5
-
$3,581 NZD
$2,015 USD
View
A
Retailer 6
-
$3,795 NZD
$2,135 USD
View
Final sale: no returns
A
Retailer 7
-
$4,027 NZD
HK$17,700 HKD
View
A
Retailer 8
-
$4,750 NZD
£2,104 GBP
View
A
Retailer 9
-
$5,257 NZD
€2,817 EUR
View
B+
Retailer 10
-
$5,311 NZD
$2,988 USD
View
A
Retailer 11
-
$5,535 NZD
ZAR 50,307 ZAR
View
A
Retailer 12
-
$5,581 NZD
$3,140 USD
View
B+
Retailer 13
-
$5,828 NZD
$3,279 USD
View
A
Retailer 14
-
$6,263 NZD
A$5,421 AUD
View
B+
Retailer 15
-
$6,334 NZD
$3,564 USD
View
B+
Retailer 16
-
$6,988 NZD
£3,096 GBP
View
B+
Retailer 17
-
$9,000 NZD
$5,064 USD
View
B
Retailer 18
-
$9,109 NZD
$5,125 USD
View
B+
Retailer 19
-
$10,371 NZD
$5,835 USD
View
B
Retailer 20
-
$11,680 NZD
SGD 8,881 SGD
View
B
Retailer 21
-
$11,865 NZD
$6,676 USD
View
B
Retailer 22
-
$14,041 NZD
$7,900 USD
View
B
Retailer 23
-
$15,935 NZD
A$13,794 AUD
View
B
Retailer 24
-
$17,019 NZD
$9,576 USD
View
B
Retailer 25
-
$22,536 NZD
$12,680 USD
View
Most Expensive
Brilliant Earth
18438142A · Oct 21
$22,554 NZD
$12,690 USD
View
Price last confirmed 12 days ago
25 more retailers have this diamond
Prices start from $2,714 NZDSave up to $19,822 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
12.56ct Radiant
$2,714 NZD