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Oval|Lab Grown|IGI

1.37ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG547268178

Shape and cutting style on the report: Oval rose cut

Certificate IGI LG547268178

Diamond specifications and retailer prices

From £229 GBP
As of November 5, 2026
Save £686 GBP (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £915 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.37ct lab-grown oval diamond

This 1.37ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG547268178 or 547268178. Listed at 8 retailers as of November 5, 2026, with prices from £229 to £915, a £686 spread on the same certified stone. NZ Jewellers lists it at £915. 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

1.37
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.4°
Pavilion angle31.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG547268178
Dimensions9.68 × 7.14 × 2.33 mm
L/W Ratio1.36
Girdle conditionFaceted
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
9.68 mm7.14 mm1.37 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG547268178
Side View
Table 63.0%Crown 27.4°Girdle: THN-VTKPavilion 31.7°CuletDepth

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: £915 GBP|Low: £220 GBP|High: £1,177 GBP|Avg: £450 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 28, 2026
Retailer 3£229 GBP
Retailer 7£266 GBP
Retailer 4£285 GBP
Retailer 6£285 GBP
Retailer 2£400 GBP
Retailer 5£465 GBP
Retailer 8£474 GBP
NZ Jewellers£915 GBP

14 data points across 8 retailers

8 retailers£229 GBP to £915 GBP

A
Cheapest Retailer
-
£229 GBP
A
Retailer 2
-
£266 GBP
View
Retailer 3
-
£285 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£285 GBP
View
B+
Retailer 5
-
£400 GBP
View
B+
Retailer 6
-
£465 GBP
View
B+
Retailer 7
-
£474 GBP
View
Most Expensive
B
NZ Jewellers
a034889d-503e-4562-9591-35d3e104d6ff · Nov 5
£915 GBP
$1,225 USD
View
7 more retailers have this diamond
Prices start from £229 GBPSave up to £686 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
1.37ct Oval
£229 GBP