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Oval|Lab Grown|IGI

1.23ct H SI1 Oval Lab Grown Diamond

H/SI1 • IGI LG633486432

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG633486432

Diamond specifications and retailer prices

From £381 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: £381 GBP at MD Diamonds and Jewellers
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at MD Diamonds and Jewellers

About this 1.23ct lab-grown oval diamond

This 1.23ct lab-grown oval sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included) and certified by IGI LG633486432 or 633486432. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.23
Carat
H
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG633486432
Dimensions8.94 × 5.94 × 3.69 mm
L/W Ratio1.51
Girdle conditionFaceted
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
8.94 mm5.94 mm1.23 ctH / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG633486432
Side View
Table 62.0%Crown 35.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £381 GBP|Low: £381 GBP|High: £381 GBP|Avg: £381 GBP
December 30, 2025
MD Diamonds and Jewellers£381 GBP

3 data points across 1 retailer

1 retailer

B+
MD Diamonds and Jewellers
LG633486432 · Nov 5
£381 GBP
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B+
1.23ct Oval
£381 GBP