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 $1,527 USD
£1,203 GBP
As of November 1, 2026
Save $11,153 USD (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $12,690 USD 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 October 31, 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $12,680 USD|Low: $1,527 USD|High: $12,690 USD|Avg: $4,626 USD|-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$1,527 USD
Retailer 7$1,639 USD
Retailer 13$1,784 USD
Retailer 12$1,902 USD
Retailer 22$2,015 USD
Retailer 8$2,266 USD
Retailer 2$2,672 USD
Retailer 16$2,812 USD
Retailer 21$2,959 USD
Retailer 14$3,114 USD
Retailer 5$3,279 USD
Retailer 19$3,524 USD
Retailer 18$3,564 USD
Retailer 11$3,932 USD
Retailer 6$5,125 USD
Retailer 15$5,835 USD
Retailer 9$6,572 USD
Retailer 10$6,676 USD
Retailer 4$7,900 USD
Retailer 20$8,966 USD
Retailer 3$9,576 USD
Brilliant Earth$12,680 USD

30 data points across 22 retailers

26 retailers$1,527 USD to $12,680 USD

A
Cheapest Retailer
-
$1,527 USD
£1,203 GBP
A
Retailer 2
-
$1,639 USD
View
A
Retailer 3
-
$1,784 USD
View
A
Retailer 4
-
$1,902 USD
View
A
Retailer 5
-
$2,015 USD
View
A
Retailer 6
-
$2,135 USD
View
Final sale: no returns
A
Retailer 7
-
$2,266 USD
HK$17,700 HKD
View
A
Retailer 8
-
$2,672 USD
£2,104 GBP
View
B+
Retailer 9
-
$2,812 USD
View
A
Retailer 10
-
$2,959 USD
€2,818 EUR
View
A
Retailer 11
-
$3,114 USD
ZAR 50,307 ZAR
View
B+
Retailer 12
-
$3,279 USD
View
Retailer 13
-
$3,328 USD
View
Price last confirmed 7 days ago
A
Retailer 14
-
$3,524 USD
A$5,421 AUD
View
B+
Retailer 15
-
$3,564 USD
View
B+
Retailer 16
-
$3,932 USD
£3,096 GBP
View
B+
Retailer 17
-
$5,064 USD
View
B
Retailer 18
-
$5,125 USD
View
B+
Retailer 19
-
$5,835 USD
View
B
Retailer 20
-
$6,572 USD
SGD 8,881 SGD
View
B
Retailer 21
-
$6,676 USD
View
B
Retailer 22
-
$7,900 USD
View
B
Retailer 23
-
$8,966 USD
A$13,794 AUD
View
B
Retailer 24
-
$9,576 USD
View
B
Retailer 25
-
$12,680 USD
View
Most Expensive
Brilliant Earth
18438142A · Oct 21
$12,690 USD
View
Price last confirmed 11 days ago
25 more retailers have this diamond
Prices start from $1,527 USDSave up to $11,153 USD

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
$1,527 USD