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
Form: <span>Massive</span>
Mineralogy, identification, care, lapidary craft, interiors and documented cultural history—with traditional beliefs clearly labelled as a separate subject.
Bornite
Its iridescent tarnish can shift through purple, blue and bronze as the surface oxidises. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Magnetite
Small natural crystals can be strongly magnetic, making magnetite physically distinctive. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →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 →Sodalite
Deep denim to royal blue with white veining gives it a graphic, stone-like appearance. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Lepidolite
A pearly mica shimmer is more characteristic than the glassy sparkle of quartz. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Turquoise
Colour ranges from sky blue to greenish blue and may include brown or black matrix. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Serpentine
Green serpentine can resemble jade visually while being geologically distinct and usually softer. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Hematite
A red-brown streak is a classic identification clue even when the specimen itself looks metallic grey. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional…
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