Pegmatitic quartz–feldspar rock with dark mica or garnet
Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and biotite/muscovite, possibly garnet
igneous
Category
Mineral, Metal (Element)
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Fossilized bone fragment, possibly vertebra
Fossil bone (mineralized hydroxyapatite; exact taxon indeterminate)
fossil
Diamond
Natural Diamond (Carbon, C)
mineral
Diamond (in jewelry setting)
Cubic Carbon (C)
mineral
Diamond (in Jewelry)
Carbon (C)
mineral
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Copper and Quartz beads
Native Copper (Cu) and Crystalline Quartz (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Pegmatite
Igneous Pegmatite (felsic intrusive rock)
igneous
Ruby (Corundum)
Aluminium oxide (Al2O3) with Chromium traces
mineral
Diamond
Native Carbon (C)
mineral
Celestite
Celestine (SrSO4)
mineral
Aura Quartz (Cranberry or Magenta Aura Quartz)
Silicon dioxide coated with titanium/niobium (SiO2)
mineral
Pink Tourmaline (Rubellite) in Lepidolite
Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4) in Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
igneous
Graphite-rich schist (probable)
Graphite schist; primarily graphite (C) with mica and quartz
metamorphic
Aura Quartz (Anomalously Coated Quartz)
Silicon Dioxide (SiO2) treated with vaporized metals
mineral
Gemstone ring (stones not reliably identifiable from the image)
Likely faceted yellow stones and clear stones set in a metal band; species and treatments are indeterminate visually
gemstone
Ruby
Corundum (Al2O3)
mineral
Fossil bone, possibly a vertebra
Fossilized vertebrate bone; exact taxon cannot be determined from the image
fossil
Native silver specimen (probable)
Silver, Ag; possibly silver-bearing sulfide or electrum
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Rough Diamond
Diamond (pure Carbon, C)
mineral
Diamond
Carbon (C)
mineral
Diamond
Native Carbon (C)
mineral
Raw Diamond
Carbon (C)
mineral
Diamond (in a jewelry setting)
Cubic Carbon (C)
mineral
Gold Nugget
Native Gold (Au)
mineral
Rough Diamond
Diamond (Native Element Carbon, C)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with trace Fe2+)
mineral
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Schist (Diamond Drill Core)
Mica Schist
metamorphic
Diamond
C (Carbon)
mineral
Diamond
Carbon (C)
mineral
Diamond
Carbon (C)
mineral
Rough Diamond
Diamond (pure Carbon, C)
mineral
Eudialyte in Matrix
Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3
mineral
Quartz-rich pegmatite (likely milky quartz with feldspar)
Pegmatitic quartz–feldspar rock; primarily SiO₂ quartz with K-feldspar/plagioclase
igneous
Polished dendritic agate cabochon
Microcrystalline quartz (chalcedony), SiO₂, with iron/manganese dendrites and possible plume inclusions
gemstone
Cut diamond tennis-chain jewelry
Diamond, crystalline carbon (C), cubic crystal system
gemstone
Polished fossil tooth or jaw fragment
Indeterminate vertebrate dental/bone fossil; likely mineralized enamel and dentine
fossil
Quartz-bearing feldspathic pegmatite
Pegmatite, chiefly quartz (SiO₂) and potassium feldspar (KAlSi₃O₈), possibly with mica
igneous
Copper Ore (Malachite/Chrysocolla bearing)
Cupriferous rock containing secondary copper minerals like Cu2CO3(OH)2
mineral