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Round|Lab Grown|IGI

1.30ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG492123564

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123564

Diamond specifications and retailer prices

From £386 GBP
As of November 5, 2026
Save £1,603 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,989 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.3ct lab-grown round diamond

This 1.3ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492123564 or 492123564. Listed at 10 retailers as of November 5, 2026, with prices from £386 to £1,989, a £1,603 spread on the same certified stone. MOH London lists it at £1,989. 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

1.30
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123564
Dimensions7.05 × 7.09 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.05 mm7.09 mm1.30 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123564
Side View
Table 56.0%Crown 33°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £1,989 GBP|Low: £370 GBP|High: £2,018 GBP|Avg: £885 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£386 GBP
Retailer 6£478 GBP
Retailer 8£478 GBP
Retailer 3£580 GBP
Retailer 2£661 GBP
Retailer 7£741 GBP
Retailer 4£1,233 GBP
MOH London£1,989 GBP

39 data points across 8 retailers

10 retailers£386 GBP to £1,989 GBP

A
Cheapest Retailer
-
£386 GBP
A
Retailer 2
-
£432 GBP
View
B+
Retailer 3
-
£478 GBP
View
Retailer 4
-
£478 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£580 GBP
View
B+
Retailer 6
-
£661 GBP
View
B+
Retailer 7
-
£741 GBP
View
B
Retailer 8
-
£1,233 GBP
View
B
Retailer 9
-
£1,256 GBP
View
Most Expensive
B
MOH London
LG492123564 · Nov 5
£1,989 GBP
View
9 more retailers have this diamond
Prices start from £386 GBPSave up to £1,603 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
1.30ct Round
£386 GBP