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Round|Lab Grown|IGI

1.12ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG499105209

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499105209

Diamond specifications and retailer prices

From £335 GBP
As of November 5, 2026
Save £1,190 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,525 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1.12ct lab-grown round diamond

This 1.12ct lab-grown round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499105209 or 499105209. Listed at 10 retailers as of November 3, 2026, with prices from £335 to £1,525, a £1,190 spread on the same certified stone. MOH London lists it at £1,525. 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

1.12
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499105209
Dimensions6.68 × 6.70 × 4.08 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
6.68 mm6.70 mm1.12 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499105209
Side View
Table 58.0%Crown 33.9°GirdlePavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £1,525 GBP|Low: £322 GBP|High: £1,544 GBP|Avg: £754 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5£335 GBP
Retailer 6£415 GBP
Retailer 8£415 GBP
Retailer 3£520 GBP
Retailer 2£574 GBP
Retailer 7£652 GBP
Retailer 9£726 GBP
Retailer 4£1,116 GBP
MOH London£1,525 GBP

32 data points across 9 retailers

10 retailers£335 GBP to £1,525 GBP

A
Cheapest Retailer
-
£335 GBP
A
Retailer 2
-
£375 GBP
View
A
Retailer 3
-
£415 GBP
View
Retailer 4
-
£415 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£520 GBP
View
A
Retailer 6
-
£574 GBP
View
B+
Retailer 7
-
£652 GBP
View
B
Retailer 8
-
£1,116 GBP
View
B
Retailer 9
-
£1,334 GBP
View
Most Expensive
B
MOH London
LG499105209 · Nov 3
£1,525 GBP
View
9 more retailers have this diamond
Prices start from £335 GBPSave up to £1,190 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
1.12ct Round
£335 GBP