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1.01ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG499108018

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499108018

Diamond specifications and retailer prices

From £395 GBP
As of November 5, 2026
Save £1,644 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,039 GBP at MOH London · As of November 5, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499108018 or 499108018. Listed at 10 retailers as of November 5, 2026, with prices from £395 to £2,039, a £1,644 spread on the same certified stone. MOH London lists it at £2,039. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499108018
Dimensions6.36 × 6.39 × 4.04 mm
L/W Ratio1.00
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
6.36 mm6.39 mm1.01 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499108018
Side View
Table 57.0%Crown 34.8°Girdle: MediumPavilion 41.4°Culet: NoneDepth 63.4%

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: £2,039 GBP|Low: £379 GBP|High: £2,069 GBP|Avg: £848 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4£395 GBP
Retailer 2£431 GBP
Retailer 8£442 GBP
Retailer 5£490 GBP
Retailer 7£490 GBP
Retailer 6£757 GBP
Retailer 9£1,025 GBP
Retailer 3£1,264 GBP
MOH London£2,039 GBP

17 data points across 9 retailers

10 retailers£395 GBP to £2,039 GBP

A
Cheapest Retailer
-
£395 GBP
A
Retailer 2
-
£431 GBP
View
A
Retailer 3
-
£442 GBP
View
Final sale: no returns
A
Retailer 4
-
£443 GBP
View
Retailer 5
-
£490 GBP
View
Price last confirmed 21 days ago
A
Retailer 6
-
£490 GBP
View
B+
Retailer 7
-
£757 GBP
View
B
Retailer 8
-
£1,264 GBP
View
B
Retailer 9
-
£1,288 GBP
View
Most Expensive
B
MOH London
LG499108018 · Nov 5
£2,039 GBP
View
9 more retailers have this diamond
Prices start from £395 GBPSave up to £1,644 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
£395 GBP