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1.05ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG846694853

Shape and cutting style on the report: Round brilliant

Certificate IGI LG846694853

Diamond specifications and retailer prices

From £210 GBP
As of November 2, 2026
Save £833 GBP (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,043 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG846694853 or 846694853. Listed at 7 retailers as of October 29, 2026, with prices from £210 to £1,043, a £833 spread on the same certified stone. MOH London lists it at £1,043. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846694853
Dimensions6.43 × 6.48 × 4.05 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 II
Top View
6.43 mm6.48 mm1.05 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846694853
Side View
Table 57.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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 2
Current: £1,043 GBP|Low: £199 GBP|High: £1,043 GBP|Avg: £371 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3£210 GBP
Retailer 5£220 GBP
Retailer 7£234 GBP
Retailer 6£237 GBP
Retailer 2£277 GBP
Retailer 4£309 GBP
MOH London£1,043 GBP

9 data points across 7 retailers

7 retailers£210 GBP to £1,043 GBP

A
Cheapest Retailer
-
£210 GBP
A
Retailer 2
-
£220 GBP
€281 EUR
View
B+
Retailer 3
-
£234 GBP
$313 USD
View
A
Retailer 4
-
£237 GBP
$317 USD
View
B+
Retailer 5
-
£277 GBP
View
B+
Retailer 6
-
£309 GBP
$414 USD
View
Most Expensive
B
MOH London
LG846694853 · Oct 29
£1,043 GBP
View
6 more retailers have this diamond
Prices start from £210 GBPSave up to £833 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
£210 GBP