Stone Explorer.

Open a stone to compare its varieties and how each formed.

All records

OpenEnter →GarnetGarnet group · six member filesCompare · Formation · Evidence Almandine garnet reference specimenGarnetEnter the file → OpenEnter →ObsidianSilica-rich volcanic glass · seven appearance filesCompare · Formation · Evidence Golden-sheen obsidian reference specimen (Mexico). Photo: James St. John, CC BY 2.0, via Wikimedia CommonsObsidianEnter the file → OpenEnter →AmethystQuartz · five natural appearance filesCompare · Formation · Evidence Purple amethyst crystal specimen from Magaliesburg, South AfricaAmethystEnter the file → OpenEnter →Tiger’s EyeQuartz · three specimen filesCompare · Formation · EvidenceTiger’s Eye reference specimenTiger’s EyeEnter the file →OpenEnter →OnyxChalcedony · two specimen filesCompare · Formation · EvidenceOnyx reference specimenOnyxEnter the file → OpenEnter →CitrineQuartz · 4 specimen recordsCompare · Formation · EvidenceCitrine reference mineral specimenCitrineEnter the file → OpenEnter →MoonstoneFeldspar · 5 specimen recordsCompare · Formation · EvidenceMoonstone reference mineral specimenMoonstoneEnter the file → OpenEnter →PrehniteCalcium-aluminium silicate · 5 specimen recordsCompare · Formation · EvidencePrehnite reference mineral specimenPrehniteEnter the file → OpenEnter →Clear QuartzQuartz · 7 specimen recordsCompare · Formation · EvidenceClear Quartz reference mineral specimenClear QuartzEnter the file → OpenEnter →Smoky QuartzQuartz · 6 specimen recordsCompare · Formation · EvidenceSmoky Quartz reference mineral specimenSmoky QuartzEnter the file → OpenEnter →Golden Rutilated QuartzIncluded quartz · 4 specimen recordsCompare · Formation · EvidenceGolden Rutilated Quartz reference mineral specimenGolden Rutilated QuartzEnter the file → OpenEnter →KyaniteAluminium silicate · 5 specimen recordsCompare · Formation · EvidenceKyanite reference mineral specimenKyaniteEnter the file → OpenEnter →AquamarineBeryl · 4 specimen recordsCompare · Formation · EvidenceAquamarine reference mineral specimenAquamarineEnter the file → OpenSuper SevenTrade name · 2 quartz referencesCompare · Formation · EvidenceIllustrative reconstruction of quartz colour zones and inclusionsSuper Seven2 quartz references · illustration

No archive record matches this search.

Reading boundary

Use the images to compare stones. Check the record for identity and treatment.

Four things get confused with one another: what you can see, what a supplier wrote down, what mineralogy says in general, and what a laboratory actually measured. This archive keeps them apart. Its diagrams explain how processes work; none of them establishes where a BE. bead came from.

File status · not written yet

Stone name

Catalogued, but not written yet. The sources have to be read and checked before this one opens.

Read the Codex entry →

Questions about Stone Explorer

Which Stone Explorer files can I open?

Open a stone marked Open in the directory to compare its references and follow a formation pathway. The Super Seven file is open.

What can I do in an open Stone Explorer file?

Compare two records side by side, follow a formation model and read the supporting evidence.

What does the archive distinguish?

The archive separates visible features, supplier records, general mineralogy and laboratory measurements.