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Round|Lab Grown|IGI

1.05ct G SI2 Round Lab Grown Diamond

ID • G/SI2 • IGI LG818687062

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818687062

Diamond specifications and retailer prices

From £104 GBP
$139 USD
As of October 29, 2026
Save £501 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £605 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818687062 or 818687062. Listed at 11 retailers as of October 29, 2026, with prices from £104 to £605, a £501 spread on the same certified stone. MOH London lists it at £605. 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

1.05
Carat
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818687062
Dimensions6.49 × 6.53 × 4.04 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
6.49 mm6.53 mm1.05 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818687062
Side View
Table 57.0%Crown 35.2°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.0%

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: Oct 29
Current: £605 GBP|Low: £104 GBP|High: £623 GBP|Avg: £328 GBP|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4£104 GBP
Retailer 10£128 GBP
Retailer 2£194 GBP
Retailer 3£219 GBP
Retailer 5£230 GBP
Retailer 7£240 GBP
Retailer 8£322 GBP
Retailer 9£413 GBP
Retailer 6£560 GBP
MOH London£605 GBP

27 data points across 10 retailers

11 retailers£104 GBP to £605 GBP

A
Cheapest Retailer
-
£104 GBP
$139 USD
A
Retailer 2
-
£128 GBP
$172 USD
View
A
Retailer 3
-
£131 GBP
$176 USD
View
A
Retailer 4
-
£194 GBP
View
A
Retailer 5
-
£219 GBP
View
A
Retailer 6
-
£230 GBP
€293 EUR
View
A
Retailer 7
-
£240 GBP
$322 USD
View
B+
Retailer 8
-
£322 GBP
$432 USD
View
B
Retailer 9
-
£413 GBP
$554 USD
View
B
Retailer 10
-
£560 GBP
$750 USD
View
Most Expensive
B
MOH London
LG818687062 · Oct 29
£605 GBP
View
10 more retailers have this diamond
Prices start from £104 GBPSave up to £501 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
1.05ct Round
£104 GBP