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Round|Lab Grown|IGI

1.16ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG395953798

Shape and cutting style on the report: Round brilliant

Certificate IGI LG395953798

Diamond specifications and retailer prices

From £133 GBP
As of November 5, 2026
Save £552 GBP (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £685 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.16ct lab-grown round diamond

This 1.16ct 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 LG395953798 or 395953798. Listed at 7 retailers as of November 4, 2026, with prices from £133 to £685, a £552 spread on the same certified stone. MOH London lists it at £685. 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

1.16
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG395953798
Dimensions6.85 × 6.83 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.85 mm6.83 mm1.16 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG395953798
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 59.8%

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: Nov 5
Current: £685 GBP|Low: £133 GBP|High: £694 GBP|Avg: £330 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£133 GBP
Retailer 3£253 GBP
Retailer 2£253 GBP
Retailer 5£267 GBP
Retailer 4£312 GBP
Retailer 7£387 GBP
MOH London£685 GBP

44 data points across 7 retailers

7 retailers£133 GBP to £685 GBP

A
Cheapest Retailer
-
£133 GBP
Final sale: no returns
A
Retailer 2
-
£253 GBP
View
A
Retailer 3
-
£253 GBP
View
A
Retailer 4
-
£267 GBP
View
B+
Retailer 5
-
£312 GBP
View
B
Retailer 6
-
£387 GBP
View
Most Expensive
B
MOH London
LG395953798 · Nov 4
£685 GBP
View
6 more retailers have this diamond
Prices start from £133 GBPSave up to £552 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
1.16ct Round
£133 GBP