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Round|Lab Grown|IGI

1.05ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG600367389

Shape and cutting style on the report: Round brilliant

Certificate IGI LG600367389

Diamond specifications and retailer prices

From £109 GBP
As of November 5, 2026
Save £521 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £630 GBP at MOH London · As of November 4, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG600367389 or 600367389. Listed at 14 retailers as of November 4, 2026, with prices from £109 to £630, a £521 spread on the same certified stone. MOH London lists it at £630. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600367389
Dimensions6.61 × 6.58 × 3.97 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.61 mm6.58 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600367389
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £630 GBP|Low: £109 GBP|High: £710 GBP|Avg: £309 GBP|-11.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3£109 GBP
Retailer 12£126 GBP
Retailer 11£135 GBP
Retailer 9£216 GBP
Retailer 2£229 GBP
Retailer 7£249 GBP
Retailer 5£261 GBP
Retailer 4£297 GBP
Retailer 6£374 GBP
Retailer 10£434 GBP
Retailer 8£458 GBP
MOH London£630 GBP

44 data points across 12 retailers

14 retailers£109 GBP to £630 GBP

A
Cheapest Retailer
-
£109 GBP
A
Retailer 2
-
£126 GBP
View
A
Retailer 3
-
£135 GBP
View
A
Retailer 4
-
£135 GBP
View
Final sale: no returns
Retailer 5
-
£150 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£216 GBP
View
A
Retailer 7
-
£229 GBP
View
B+
Retailer 8
-
£249 GBP
View
A
Retailer 9
-
£261 GBP
View
B+
Retailer 10
-
£297 GBP
View
B+
Retailer 11
-
£374 GBP
View
B
Retailer 12
-
£434 GBP
View
B
Retailer 13
-
£458 GBP
View
Most Expensive
B
MOH London
LG600367389 · Nov 4
£630 GBP
View
13 more retailers have this diamond
Prices start from £109 GBPSave up to £521 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
£109 GBP