Chalcopyrite
Fresh surfaces are brass-yellow, while tarnished pieces may show vivid purple, blue and green colours. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Editorial guides
Origin: <span>Peru</span>
Mineralogy, identification, care, lapidary craft, interiors and documented cultural history—with traditional beliefs clearly labelled as a separate subject.
Chrysocolla
Blue-green colour can range from soft turquoise to saturated teal depending on associated minerals. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Angelite
Its soft powder-blue colour and matte appearance are more subdued than most blue gemstones. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Pyrite
Sharp cubes from Spain and sparkling clusters from Peru are visually very different expressions of the same mineral. Learn its mineral identity, hardness, care, common treatments, authenticity notes…
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