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Round|Lab Grown|IGI

10.12ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG659429522

Shape and cutting style on the report: Round brilliant

Certificate IGI LG659429522

Diamond specifications and retailer prices

From £1,990 GBP
$2,670 USD
As of November 2, 2026
Save £2,062 GBP (51%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,110 GBP at Rare Carat · As of October 25, 2026
View at Rare Carat

About this 10.12ct lab-grown round diamond

This 10.12ct lab-grown round 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 LG659429522 or 659429522. Listed at 6 retailers as of November 2, 2026, with a 104% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

10.12
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659429522
Dimensions14.01 × 13.93 × 8.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.01 mm13.93 mm10.12 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659429522
Side View
Table 58.0%Crown 33.6°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.2%

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 2
Current: £4,110 GBP|Low: £1,698 GBP|High: £4,158 GBP|Avg: £2,805 GBP|-1.2%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 4£1,990 GBP
Retailer 3£2,225 GBP
Retailer 2£2,250 GBP
Retailer 6£2,490 GBP
Retailer 5£4,052 GBP
Rare Carat£4,110 GBP

36 data points across 6 retailers

6 retailers£1,990 GBP to £4,052 GBP

A
Cheapest Retailer
-
£1,990 GBP
$2,670 USD
B+
Retailer 2
-
£2,225 GBP
View
B+
Retailer 3
-
£2,250 GBP
€2,875 EUR
View
B+
Retailer 4
-
£2,490 GBP
$3,342 USD
View
B
Retailer 5
-
£4,052 GBP
$5,437 USD
View
Most Expensive
Rare Carat
301002 · Oct 25
£4,110 GBP
$5,515 USD
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from £1,990 GBPSave up to £2,062 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
10.12ct Round
£1,990 GBP