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Round|Lab Grown|IGI

1.05ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG811647135

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811647135

Diamond specifications and retailer prices

From £215 GBP
As of November 5, 2026
Save £409 GBP (66%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £625 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG811647135 or 811647135. Listed at 9 retailers as of November 4, 2026, with prices from £215 to £625, a £409 spread on the same certified stone. MOH London lists it at £625. 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
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811647135
Dimensions6.49 × 6.45 × 4.05 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 mm6.45 mm1.05 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811647135
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
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: £625 GBP|Low: £216 GBP|High: £633 GBP|Avg: £331 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3£228 GBP
Retailer 5£245 GBP
Retailer 7£247 GBP
Retailer 2£253 GBP
Retailer 4£319 GBP
Retailer 6£347 GBP
MOH London£625 GBP

42 data points across 7 retailers

9 retailers£215 GBP to £625 GBP

A
Cheapest Retailer
-
£215 GBP
A
Retailer 2
-
£228 GBP
View
A
Retailer 3
-
£245 GBP
View
A
Retailer 4
-
£247 GBP
View
B+
Retailer 5
-
£253 GBP
View
B+
Retailer 6
-
£319 GBP
View
B+
Retailer 7
-
£347 GBP
View
B
Retailer 8
-
£471 GBP
View
Most Expensive
B
MOH London
LG811647135 · Nov 4
£625 GBP
View
8 more retailers have this diamond
Prices start from £215 GBPSave up to £409 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
£215 GBP