Radiant|Lab Grown|IGI

12.09ct F VS1 Radiant Lab Grown Diamond

ID • F/VS1 • IGI LG791645523

Shape and cutting style on the report: Cut cornered rectangular mixed cut

Certificate IGI LG791645523

Diamond specifications and retailer prices

From $4,945 USD
As of November 2, 2026
Save $12,654 USD (72%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $17,599 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 12.09ct lab-grown radiant diamond

This 12.09ct 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 LG791645523 or 791645523. Listed at 16 retailers as of October 31, 2026, with prices from $4,945 to $17,599, a $12,654 spread on the same certified stone. Taylor and Hart lists it at $17,599. 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

12.09
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45°
Pavilion angle45°
OriginLab Grown
Grading LabIGI
CertificateIGI LG791645523
Dimensions14.86 × 10.45 × 7.38 mm
L/W Ratio1.42
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.86 mm10.45 mm12.09 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG791645523
Side View
Table 64.0%Crown 45°Girdle: MediumPavilion 45°Culet: LargeDepth 70.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $6,346 USD|Low: $4,090 USD|High: $17,599 USD|Avg: $7,600 USD|-44.4%
Retailer 1
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
Taylor and Hart
November 2, 2026
Retailer 15$4,261 USD
Retailer 13$4,465 USD
Retailer 2$4,942 USD
Retailer 4$4,942 USD
Retailer 10$4,945 USD
Retailer 3$4,991 USD
Retailer 7$6,176 USD
Retailer 1$6,346 USD
Retailer 12$6,431 USD
Retailer 6$6,949 USD
Retailer 11$7,190 USD
Retailer 9$7,650 USD
Retailer 14$9,233 USD
Retailer 8$9,325 USD
Retailer 5$10,107 USD
Taylor and Hart$17,599 USD

42 data points across 16 retailers

16 retailers$4,945 USD to $17,599 USD

Retailer 1
-
$4,261 USD
Price last confirmed 9 days ago
Retailer 2
-
$4,465 USD
View
Price last confirmed 12 days ago
Retailer 3
-
$4,942 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$4,942 USD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
$4,945 USD
View
B+
Retailer 6
-
$4,991 USD
View
Retailer 7
-
$6,176 USD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$6,346 USD
£4,997 GBP
View
B+
Retailer 9
-
$6,431 USD
View
B+
Retailer 10
-
$6,949 USD
£5,472 GBP
View
B+
Retailer 11
-
$7,190 USD
View
B+
Retailer 12
-
$7,650 USD
ZAR 123,583 ZAR
View
B
Retailer 13
-
$9,233 USD
View
B
Retailer 14
-
$9,325 USD
A$14,346 AUD
View
B
Retailer 15
-
$10,107 USD
View
Most Expensive
B
Taylor and Hart
76QT5S6 · Oct 31
$17,599 USD
View
15 more retailers have this diamond
Prices start from $4,945 USDSave up to $12,654 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.

B+
12.09ct Radiant
$4,945 USD