Obsidian
Freshly broken obsidian can have razor-sharp conchoidal fractures, a reminder that it is glass rather than crystalline quartz. Learn its mineral identity, hardness, care, common treatments, authenticity notes…
Read guide →Mineralogy, identification, care, lapidary craft, interiors and documented cultural history—with traditional beliefs clearly labelled as a separate subject.
Freshly broken obsidian can have razor-sharp conchoidal fractures, a reminder that it is glass rather than crystalline quartz. Learn its mineral identity, hardness, care, common treatments, authenticity notes…
Read guide →The group includes familiar deep red almandine as well as bright orange spessartine and green grossular varieties. Learn its mineral identity, hardness, care, common treatments, authenticity notes and…
Read guide →The inclusions can resemble miniature forests, branches or underwater landscapes. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Its chaotic looping bands are more important than transparency. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Earth-toned bands can resemble deserts, horizons and mountains, which explains the name. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Dense brick-red colour makes it a durable, accessible beginner stone. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →The cream base with dark spots explains the dog-inspired trade name. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Polished pieces show a dramatic cracked pattern of yellowish carbonate veins in darker matrix. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Ranges from pale tea-coloured quartz to nearly black morion. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
Read guide →Pattern, banding and translucency are usually more important than a single “grade”. Learn its mineral identity, hardness, care, common treatments, authenticity notes and traditional associations.
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