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Round|Lab Grown|IGI

1.00ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG492123560

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123560

Diamond specifications and retailer prices

From £392 GBP
As of November 5, 2026
Save £1,629 GBP (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,020 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct 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 LG492123560 or 492123560. Listed at 9 retailers as of November 5, 2026, with prices from £392 to £2,020, a £1,629 spread on the same certified stone. MOH London lists it at £2,020. 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

1.00
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123560
Dimensions6.32 × 6.36 × 4.03 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
6.32 mm6.36 mm1.00 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG492123560
Side View
Table 57.5%Crown 35.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.5%

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: £2,020 GBP|Low: £376 GBP|High: £2,050 GBP|Avg: £869 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 4£392 GBP
Retailer 2£431 GBP
Retailer 7£438 GBP
Retailer 5£485 GBP
Retailer 6£751 GBP
Retailer 8£1,015 GBP
Retailer 3£1,253 GBP
MOH London£2,020 GBP

12 data points across 8 retailers

9 retailers£392 GBP to £2,020 GBP

A
Cheapest Retailer
-
£392 GBP
A
Retailer 2
-
£431 GBP
View
A
Retailer 3
-
£438 GBP
View
A
Retailer 4
-
£485 GBP
View
Retailer 5
-
£485 GBP
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£751 GBP
View
B
Retailer 7
-
£1,253 GBP
View
B
Retailer 8
-
£1,276 GBP
View
Most Expensive
B
MOH London
LG492123560 · Nov 5
£2,020 GBP
View
8 more retailers have this diamond
Prices start from £392 GBPSave up to £1,629 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
1.00ct Round
£392 GBP