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Inclusions are a record of how and where a gemstone grew. Mapping them in three dimensions lets us study that history and understand how internal features influence the way a rough crystal can be cut.
Scan data are combined with photomicrography so that each mapped feature can be tied to a magnified image of the inclusion itself.
Inclusions are photographed through the gemological microscope using darkfield, brightfield and fibre-optic lighting.
Documenting crystals, needles, fingerprints and growth features that indicate origin or treatment.
Creates a visual reference library for comparison with future samples.
Optical scanning captures the outer shape of a stone, and tomographic methods locate features within it.
Building a full 3D model of a rough crystal together with its inclusions.
Shows the position and size of each feature before any material is removed.
Software places candidate polished shapes inside the scanned rough and compares the outcomes.
Studying the trade-off between yield, clarity and proportions.
Allows options to be evaluated virtually rather than by trial on the stone.
It shows the type, size and position of internal features relative to the outer surface of the stone.
Yes. Optical and tomographic scanning are non-contact methods and do not alter the sample.
They preserve information about the growth environment, which helps in determining origin and in recognising synthetic or treated material.
Establishing species and variety through optical, physical and spectroscopic measurement.
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Consistent description of colour, clarity, cut and weight under controlled conditions.
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Relating proportions and symmetry to brightness, fire and scintillation.
Read MoreAdvancing the understanding of gemstones through science, precision and innovation, from their formation deep within the Earth to the finished stone.
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