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Round|Lab Grown|IGI

1.03ct D SI2 Round Lab Grown Diamond

VG • D/SI2 • IGI LG550265363

Shape and cutting style on the report: Round brilliant

Certificate IGI LG550265363

Diamond specifications and retailer prices

From £227 GBP
As of November 6, 2026
Save £395 GBP (64%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £622 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG550265363 or 550265363. Listed at 5 retailers as of November 4, 2026, with prices from £227 to £622, a £395 spread on the same certified stone. MOH London lists it at £622. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG550265363
Dimensions6.46 × 6.42 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.46 mm6.42 mm1.03 ctD / SI2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG550265363
Side View
Table 58.5%Crown 37.1°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £622 GBP|Low: £180 GBP|High: £678 GBP|Avg: £340 GBP|-7.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2£227 GBP
Retailer 3£247 GBP
Retailer 5£260 GBP
Retailer 4£316 GBP
MOH London£622 GBP

43 data points across 5 retailers

5 retailers£227 GBP to £622 GBP

B+
Cheapest Retailer
-
£227 GBP
B+
Retailer 2
-
£247 GBP
View
B+
Retailer 3
-
£260 GBP
View
B
Retailer 4
-
£316 GBP
View
Most Expensive
B
MOH London
LG550265363 · Nov 4
£622 GBP
View
4 more retailers have this diamond
Prices start from £227 GBPSave up to £395 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.

B+
1.03ct Round
£227 GBP