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1.04ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG515236935

Shape and cutting style on the report: Round brilliant

Certificate IGI LG515236935

Diamond specifications and retailer prices

From £254 GBP
As of November 6, 2026
Save £392 GBP (61%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £646 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.04ct lab-grown round diamond

This 1.04ct lab-grown round sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG515236935 or 515236935. Listed at 2 retailers as of November 4, 2026, with prices from £254 to £646, a £392 spread on the same certified stone. MOH London lists it at £646. 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

1.04
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515236935
Dimensions6.47 × 6.39 × 4.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type IIa
Top View
6.47 mm6.39 mm1.04 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515236935
Side View
Table 54.5%Crown 36.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 63.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £646 GBP|Low: £236 GBP|High: £656 GBP|Avg: £434 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
November 4, 2026
Retailer 2£254 GBP
Retailer 3£403 GBP
MOH London£646 GBP

8 data points across 3 retailers

2 retailers£254 GBP to £646 GBP

A
Cheapest Retailer
-
£254 GBP
Most Expensive
B+
MOH London
LG515236935 · Nov 4
£646 GBP
View
1 more retailer has this diamond
Prices start from £254 GBPSave up to £392 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
1.04ct Round
£254 GBP