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1.15ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG733547134

Shape and cutting style on the report: Round brilliant

Certificate IGI LG733547134

Diamond specifications and retailer prices

From £262 GBP
€334 EUR
As of October 29, 2026
Save £457 GBP (64%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £718 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.15ct lab-grown round diamond

This 1.15ct lab-grown round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG733547134 or 733547134. Listed at 6 retailers as of October 29, 2026, with prices from £262 to £718, a £457 spread on the same certified stone. MOH London lists it at £718. 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

1.15
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733547134
Dimensions6.73 × 6.69 × 4.11 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.73 mm6.69 mm1.15 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733547134
Side View
Table 61.0%Crown 35°Girdle: MediumPavilion 41°Culet: NoneDepth 61.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £718 GBP|Low: £227 GBP|High: £723 GBP|Avg: £353 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 2£262 GBP
Retailer 4£266 GBP
Retailer 5£275 GBP
Retailer 6£313 GBP
Retailer 3£393 GBP
MOH London£718 GBP

16 data points across 6 retailers

6 retailers£262 GBP to £718 GBP

A
Cheapest Retailer
-
£262 GBP
€334 EUR
A
Retailer 2
-
£266 GBP
$357 USD
View
A
Retailer 3
-
£275 GBP
$368 USD
View
Retailer 4
-
£313 GBP
$420 USD
View
Price last confirmed 34 days ago
A
Retailer 5
-
£393 GBP
$527 USD
View
Most Expensive
A
MOH London
LG733547134 · Oct 29
£718 GBP
View
5 more retailers have this diamond
Prices start from £262 GBPSave up to £457 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
1.15ct Round
£262 GBP