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Round|Lab Grown|IGI

12.09ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG610350434

Shape and cutting style on the report: Round brilliant

Certificate IGI LG610350434

Diamond specifications and retailer prices

From £3,047 GBP
$4,082 USD
As of November 1, 2026
Save £16,537 GBP (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £19,584 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.09ct lab-grown round diamond

This 12.09ct 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 LG610350434 or 610350434. Listed at 20 retailers as of October 31, 2026, with prices from £3,047 to £19,584, a £16,537 spread on the same certified stone. Brilliant Earth lists it at £19,584. 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
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG610350434
Dimensions14.84 × 14.89 × 8.93 mm
L/W Ratio1.00
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
14.84 mm14.89 mm12.09 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG610350434
Side View
Table 59.0%Crown 32.8°Girdle: MediumPavilion 41°Culet: NoneDepth 60.1%

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 1
Current: £19,584 GBP|Low: £2,612 GBP|High: £20,196 GBP|Avg: £5,512 GBP|-3.0%
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
November 2, 2026
Retailer 18£2,721 GBP
Retailer 7£2,961 GBP
Retailer 9£3,047 GBP
Retailer 3£3,156 GBP
Retailer 16£3,157 GBP
Retailer 6£3,361 GBP
Retailer 8£3,944 GBP
Retailer 2£4,107 GBP
Retailer 17£4,268 GBP
Retailer 14£4,886 GBP
Retailer 5£4,894 GBP
Retailer 10£5,035 GBP
Retailer 13£5,065 GBP
Retailer 11£5,910 GBP
Retailer 15£7,324 GBP
Retailer 12£7,898 GBP
Retailer 4£7,940 GBP
Brilliant Earth£19,584 GBP

43 data points across 18 retailers

20 retailers£3,047 GBP to £19,584 GBP

Retailer 1
-
£2,721 GBP
$3,646 USD
Price last confirmed 12 days ago
Retailer 2
-
£2,961 GBP
$3,967 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
£3,047 GBP
$4,082 USD
View
Final sale: no returns
Retailer 4
-
£3,156 GBP
$4,229 USD
View
Price last confirmed 20 days ago
Retailer 5
-
£3,156 GBP
$4,229 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
£3,157 GBP
$4,230 USD
View
A
Retailer 7
-
£3,361 GBP
$4,504 USD
View
Retailer 8
-
£3,944 GBP
$5,285 USD
View
Price last confirmed 11 days ago
A
Retailer 9
-
£4,107 GBP
View
A
Retailer 10
-
£4,268 GBP
$5,719 USD
View
B+
Retailer 11
-
£4,886 GBP
ZAR 105,752 ZAR
View
B+
Retailer 12
-
£4,894 GBP
$6,557 USD
View
B+
Retailer 13
-
£5,065 GBP
€6,463 EUR
View
B+
Retailer 14
-
£5,910 GBP
A$12,183 AUD
View
B
Retailer 15
-
£7,324 GBP
$9,813 USD
View
B+
Retailer 16
-
£7,898 GBP
A$16,280 AUD
View
B
Retailer 17
-
£7,940 GBP
$10,639 USD
View
B
Retailer 18
-
£8,762 GBP
$11,741 USD
View
B
Retailer 19
-
£11,136 GBP
$14,921 USD
View
Most Expensive
B
Brilliant Earth
20601911A · Oct 31
£19,584 GBP
$26,240 USD
View
19 more retailers have this diamond
Prices start from £3,047 GBPSave up to £16,537 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
12.09ct Round
£3,047 GBP