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Round|Lab Grown|IGI

12.26ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG619458256

Shape and cutting style on the report: Round brilliant

Certificate IGI LG619458256

Diamond specifications and retailer prices

From £2,569 GBP
As of November 1, 2026
Save £17,291 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £19,860 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.26ct lab-grown round diamond

This 12.26ct lab-grown round 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 LG619458256 or 619458256. Listed at 22 retailers as of October 31, 2026, with prices from £2,569 to £19,860, a £17,291 spread on the same certified stone. Brilliant Earth lists it at £19,860. 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

12.26
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619458256
Dimensions14.72 × 14.80 × 9.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.72 mm14.80 mm12.26 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619458256
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.9%

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 1
Current: £19,860 GBP|Low: £2,568 GBP|High: £19,860 GBP|Avg: £5,901 GBP
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
November 1, 2026
Retailer 9£2,569 GBP
Retailer 4£2,757 GBP
Retailer 7£3,088 GBP
Retailer 5£3,198 GBP
Retailer 13£3,314 GBP
Retailer 3£3,898 GBP
Retailer 11£4,164 GBP
Retailer 14£4,950 GBP
Retailer 6£4,957 GBP
Retailer 12£5,135 GBP
Retailer 2£5,993 GBP
Retailer 15£7,518 GBP
Retailer 16£7,673 GBP
Retailer 10£8,010 GBP
Retailer 8£8,879 GBP
Brilliant Earth£19,860 GBP

34 data points across 16 retailers

22 retailers£2,569 GBP to £19,860 GBP

A
Cheapest Retailer
-
£2,569 GBP
Retailer 2
-
£2,757 GBP
$3,694 USD
View
Price last confirmed 11 days ago
Retailer 3
-
£3,000 GBP
$4,019 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
£3,088 GBP
$4,137 USD
View
Final sale: no returns
Retailer 5
-
£3,198 GBP
$4,285 USD
View
Price last confirmed 20 days ago
Retailer 6
-
£3,198 GBP
$4,285 USD
View
Price last confirmed 11 days ago
A
Retailer 7
-
£3,314 GBP
$4,440 USD
View
A
Retailer 8
-
£3,403 GBP
$4,560 USD
View
A
Retailer 9
-
£3,898 GBP
$5,223 USD
View
Retailer 10
-
£3,997 GBP
$5,355 USD
View
Price last confirmed 11 days ago
A
Retailer 11
-
£4,164 GBP
View
B+
Retailer 12
-
£4,950 GBP
ZAR 107,154 ZAR
View
Retailer 13
-
£4,957 GBP
$6,642 USD
View
B+
Retailer 14
-
£5,135 GBP
€6,553 EUR
View
Retailer 15
-
£5,352 GBP
$7,171 USD
View
Price last confirmed 53 days ago
B+
Retailer 16
-
£5,993 GBP
A$12,353 AUD
View
B
Retailer 17
-
£7,518 GBP
$10,073 USD
View
B
Retailer 18
-
£7,673 GBP
$10,281 USD
View
B+
Retailer 19
-
£8,010 GBP
A$16,511 AUD
View
B
Retailer 20
-
£8,879 GBP
$11,897 USD
View
B
Retailer 21
-
£11,293 GBP
$15,131 USD
View
Most Expensive
B
Brilliant Earth
20602440A · Oct 31
£19,860 GBP
$26,610 USD
View
21 more retailers have this diamond
Prices start from £2,569 GBPSave up to £17,291 GBP

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
12.26ct Round
£2,569 GBP