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1.30ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG492134147

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492134147

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 LG492134147 or 492134147. 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
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492134147
Dimensions7.14 × 7.17 × 4.12 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
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
7.14 mm7.17 mm1.30 ctK / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492134147
Side View
Table 63.0%Crown 32.7°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 57.5%

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: Nov 5
Current: £1,989 GBP|Low: £370 GBP|High: £2,018 GBP|Avg: £889 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 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
Retailer 9£1,279 GBP
MOH London£1,989 GBP

38 data points across 9 retailers

10 retailers£386 GBP to £1,989 GBP

A
Cheapest Retailer
-
£386 GBP
B+
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
LG492134147 · 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