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0.86ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG571310358

Shape and cutting style on the report: Round brilliant

Certificate IGI LG571310358

Diamond specifications and retailer prices

From £389 GBP
As of October 28, 2026
1 retailer carries this diamond
Only listing: £389 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 0.86ct lab-grown round diamond

This 0.86ct lab-grown round sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG571310358 or 571310358. Listed at a single retailer as of October 28, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

0.86
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571310358
Dimensions6.18 × 6.22 × 3.71 mm
L/W Ratio1.01
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
6.18 mm6.22 mm0.86 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571310358
Side View
Table 59.0%Crown 32.5°Girdle: MediumPavilion 41.1°Culet: NoneDepth 59.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: £389 GBP|Low: £331 GBP|High: £389 GBP|Avg: £354 GBP
Diamond Quarter
Retailer 2
February 5, 2026
Retailer 2£331 GBP
Diamond Quarter£389 GBP

6 data points across 2 retailers

1 retailer

B
Diamond Quarter
0.86SI1ELG98CEC5N · Oct 28
£389 GBP
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B
0.86ct Round
£389 GBP