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Round|Lab Grown|IGI

1.01ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG818687215

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818687215

Diamond specifications and retailer prices

From £105 GBP
$141 USD
As of November 1, 2026
Save £504 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £609 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.01ct lab-grown round diamond

This 1.01ct 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 LG818687215 or 818687215. Listed at 14 retailers as of November 1, 2026, with prices from £105 to £609, a £504 spread on the same certified stone. MOH London lists it at £609. 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

1.01
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818687215
Dimensions6.40 × 6.45 × 3.98 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
6.40 mm6.45 mm1.01 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818687215
Side View
Table 57.0%Crown 35.3°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.0%

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 1
Current: £609 GBP|Low: £105 GBP|High: £617 GBP|Avg: £293 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8£105 GBP
Retailer 9£122 GBP
Retailer 3£203 GBP
Retailer 4£223 GBP
Retailer 2£229 GBP
Retailer 6£231 GBP
Retailer 11£243 GBP
Retailer 5£291 GBP
Retailer 7£331 GBP
Retailer 10£461 GBP
MOH London£609 GBP

31 data points across 11 retailers

14 retailers£105 GBP to £609 GBP

A
Cheapest Retailer
-
£105 GBP
$141 USD
A
Retailer 2
-
£122 GBP
$163 USD
View
Retailer 3
-
£131 GBP
$175 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£131 GBP
$175 USD
View
A
Retailer 5
-
£203 GBP
$272 USD
View
A
Retailer 6
-
£223 GBP
View
A
Retailer 7
-
£229 GBP
View
A
Retailer 8
-
£231 GBP
€295 EUR
View
B+
Retailer 9
-
£243 GBP
$326 USD
View
B+
Retailer 10
-
£291 GBP
$390 USD
View
B+
Retailer 11
-
£331 GBP
$443 USD
View
B
Retailer 12
-
£419 GBP
$562 USD
View
B
Retailer 13
-
£461 GBP
$617 USD
View
Most Expensive
B
MOH London
LG818687215 · Nov 1
£609 GBP
View
13 more retailers have this diamond
Prices start from £105 GBPSave up to £504 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
1.01ct Round
£105 GBP