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Round|Lab Grown|IGI

1.00ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG487107073

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487107073

Diamond specifications and retailer prices

From £392 GBP
As of November 5, 2026
Save £885 GBP (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,036 GBP at MOH London · As of October 29, 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 LG487107073 or 487107073. Listed at 10 retailers as of November 5, 2026, with a 226% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487107073
Dimensions6.39 × 6.32 × 3.93 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
6.39 mm6.32 mm1.00 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487107073
Side View
Table 58.5%Crown 36.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,036 GBP|Low: £313 GBP|High: £2,050 GBP|Avg: £786 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4£392 GBP
Retailer 2£431 GBP
Retailer 7£438 GBP
Retailer 9£438 GBP
Retailer 5£485 GBP
Retailer 8£485 GBP
Retailer 6£751 GBP
Retailer 10£1,015 GBP
Retailer 3£1,253 GBP
MOH London£2,036 GBP

17 data points across 10 retailers

10 retailers£392 GBP to £1,276 GBP

A
Cheapest Retailer
-
£392 GBP
A
Retailer 2
-
£431 GBP
View
A
Retailer 3
-
£438 GBP
View
A
Retailer 4
-
£438 GBP
View
Final sale: no returns
Retailer 5
-
£485 GBP
View
Price last confirmed 21 days ago
A
Retailer 6
-
£485 GBP
View
B+
Retailer 7
-
£751 GBP
View
B
Retailer 8
-
£1,253 GBP
View
B
Retailer 9
-
£1,276 GBP
View
Most Expensive
MOH London
LG487107073 · Oct 29
£2,036 GBP
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from £392 GBPSave up to £885 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