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Oval|Lab Grown|IGI

12.33ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG559269001

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG559269001

Diamond specifications and retailer prices

From £1,486 GBP
As of October 27, 2026
Save £11,791 GBP (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £13,277 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.33ct lab-grown oval diamond

This 12.33ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG559269001 or 559269001. Listed at 11 retailers as of October 27, 2026, with prices from £1,486 to £13,277, a £11,791 spread on the same certified stone. Brilliant Earth lists it at £13,277. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

12.33
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG559269001
Dimensions18.85 × 13.09 × 8.12 mm
L/W Ratio1.44
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
18.85 mm13.09 mm12.33 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG559269001
Side View
Table 61.0%Crown 35.2°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.0%

Caratlytics Score

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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: Oct 27
Current: £14,404 GBP|Low: £1,486 GBP|High: £14,404 GBP|Avg: £6,802 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
November 1, 2026
Retailer 16£1,486 GBP
Retailer 12£2,094 GBP
Retailer 17£2,636 GBP
Retailer 7£2,885 GBP
Retailer 11£3,097 GBP
Retailer 13£3,178 GBP
Retailer 6£3,185 GBP
Retailer 5£3,803 GBP
Retailer 2£4,355 GBP
Retailer 4£4,602 GBP
Retailer 18£6,062 GBP
Retailer 14£8,061 GBP
Retailer 3£8,907 GBP
Retailer 15£9,911 GBP
Retailer 8£10,367 GBP
Retailer 9£12,441 GBP
Retailer 10£12,441 GBP
Brilliant Earth£14,404 GBP

11 data points across 18 retailers

11 retailers£1,486 GBP to £13,277 GBP

A
Cheapest Retailer
-
£1,486 GBP
A
Retailer 2
-
£2,094 GBP
$2,806 USD
View
B+
Retailer 3
-
£2,636 GBP
$3,532 USD
View
B
Retailer 4
-
£3,097 GBP
View
B
Retailer 5
-
£3,178 GBP
$4,258 USD
View
B
Retailer 6
-
£4,602 GBP
$6,167 USD
View
B
Retailer 7
-
£6,062 GBP
$8,123 USD
View
B
Retailer 8
-
£8,061 GBP
$10,801 USD
View
B
Retailer 9
-
£8,907 GBP
$11,935 USD
View
B
Retailer 10
-
£9,911 GBP
$13,280 USD
View
Most Expensive
B
Brilliant Earth
22300988A · Oct 31
£13,277 GBP
$17,790 USD
View
10 more retailers have this diamond
Prices start from £1,486 GBPSave up to £11,791 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
12.33ct Oval
£1,486 GBP