Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
metamorphic
Category
Carved Stone
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Granite Pebble
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
igneous
Quartzite pebble
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Tumbled dark green stone, likely serpentine or greenstone
Serpentinite (hydrated magnesium silicate minerals, chiefly antigorite/lizardite); possible chlorite-rich greenstone
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Sedimentary rock composed mainly of calcite (CaCO3)
sedimentary
Granite
Phaneritic Plutonic Felsic Rock (Granite)
igneous
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and Biotite)
igneous
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Mineral-based Sedimentary/Silica
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Yellow Citrine Quartz
Silicon Dioxide (SiO₂)
mineral
Fossil Coral (Petoskey Stone or similar)
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Picture Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Unakite
Unakite (Altered Granite)
metamorphic
Unakite
Epidotized Granite
metamorphic
Amygdaloidal Basalt with Epidote
Vesicular Basalt with secondary Epidote/Quartz mineral infill
igneous
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety)
Porphyritic Basalt containing Plagioclase Feldspar phenocrysts
igneous
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with Fuscite inclusions
mineral
Pink Quartzite
Quartzite (SiO2)
metamorphic
Unakite-like granite with a white feldspar inclusion
Granite, chiefly quartz–feldspar–biotite; pale inclusion likely albite/orthoclase feldspar
igneous
Quartzite
Quartzite (mostly SiO2)
metamorphic
Greenstone (Diabase or Metabasalt)
Metamorphosed Mafic Igneous Rock
metamorphic
Diorite (Porphyritic) / Granite
Plutonic Igneous Rock (Granodiorite / Diorite)
igneous
Jasper Breccia
Silicon Dioxide (SiO2) with impurities
sedimentary
Rose Quartz
Rose Quartz (SiO2 - Silicon Dioxide with trace amounts of titanium, iron, or manganese)
mineral
Yellow Quartz (Citrine/Lemon Quartz)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite - Lithium-rich Mica)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Tiger's Eye (Rough Slab)
Pseudomorph of Quartz after Crocidolite (SiO2 with Fe-containing inclusions)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities
sedimentary
Jasper
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Hag Stone
Perforated Sedimentary Rock (typically Sandstone or Siltstone)
sedimentary
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary