The Gem Atlas
A field index for reading materials, objects and the evidence held inside them.
Diamonds
A working index of diamond structure, colour, inclusions, cutting, and the observations that separate description from assumption.
Coloured stones
Corundum, beryl, and tourmaline viewed through chemistry, optical behaviour, treatment history, and responsible language.
Rare gems
Materials encountered less often, where small datasets and unfamiliar names make cautious identification especially important.
Jewellery houses
A design-history index focused on identifiable vocabularies, technical developments, and the evidence behind attribution.
Decorative arts
Periods, movements, and techniques that connect the wearable object to architecture, furniture, metalwork, and graphic design.
Gem science
Methods and instruments that turn appearance into repeatable evidence while making the limits of each test explicit.