Quartz with inclusions (likely Tourmaline or Biotite)
Silicon Dioxide (SiO2)
mineral
Category
Mineral Specimen
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Garnet in Matrix (Schist or Quartz)
Almandine Garnet, Fe3Al2(SiO4)3
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartz with Graphite/Tourmaline Inclusions
Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements
mineral
Quartz with Actinolite or Tourmaline inclusions
Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions
igneous
Quartz Pebble with Epidote / Chlorite Inclusions
Silicon Dioxide (SiO2) with Epidote/Chlorite inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst (or Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Geode with Chalcedony
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Dumortierite in Quartz
Dumortierite (Al6O3(BO3)(SiO4)3) with Quartz (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Herkimer Diamond variant)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Hematite)
mineral
Rose quartz (rough fragment)
Quartz, SiO₂; pink coloration is commonly associated with trace elements and microscopic inclusions.
mineral
Quartz crystal cluster
Quartz (SiO₂), likely iron-stained; exact variety uncertain
mineral
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
gemstone
Chalcedony in Matrix (likely Agatized Coral or Chert)
Silicon Dioxide (SiO2)
sedimentary
Chocolate Jasper
Microcrystalline Quartz (SiO2) with impurities
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Jasper and Quartz Breccia
Silicified Breccia / Microcrystalline Quartz with Iron Oxide
sedimentary
Small dark mineral/rock fragment
Indeterminate; possibly biotite-rich schist, graphite, or metallic sulfide
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Azurite and Malachite
Copper Carbonates: Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
mineral
Calcite on Host Rock
Calcium Carbonate (CaCO3)
mineral
Possible aquamarine (beryl) crystal fragment
Beryl, Be₃Al₂Si₆O₁₈; green-blue color may indicate aquamarine
mineral
Heliodor (Yellow Beryl)
Beryl (Be3Al2Si6O18 with iron impurities)
gemstone
Citrine Quartz (Raw)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Si,Al)3O8
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Limonite
FeO(OH)·nH2O
mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
mineral
Moonstone (Feldspar)
Orthoclase Feldspar KAlSi3O8 / Albite NaAlSi3O8
gemstone
Raw Sunstone
Sunstone (Feldspar variety, (Ca,Na)((Al,Si)2Si2O8))
mineral
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
mineral