Sunstone and Garnet
Plagioclase Feldspar ((Na,Ca)(Al,Si)4O8) and Almandine Garnet (Fe3Al2(SiO4)3)
gemstone
Category
Sedimentary And Igneous
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Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granite Pebble
Granite
igneous
K2 Jasper (K2 Granite)
Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)
igneous
Gabbro
Gabbro
igneous
Gabbro (Water-worn Pebble)
Gabbro
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sandstone (Quartz-rich)
Arenite (SiO2)
sedimentary
Weathered Gabbro or Diorite (Igneous Cobble)
Phaneritic Basic/Intermediate Igneous Rock
igneous
Granite or Porphyritic Igneous Rock (weathered)
Granitoid
Igneous
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Granite
Granite
igneous
Quartz in Host Rock
Silicon Dioxide (SiO2) in Rhyolite or Granite matrix
igneous
Granite Pebble (Pink/Orthoclase Granite)
Granite
igneous
Granite
Granite (composed of Quartz, Feldspar, and Mica)
igneous
Porphyry
Porphyritic Igneous Rock
igneous
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Orthoclase Feldspar (or K-Feldspar)
Orthoclase (KAlSi3O8)
Mineral
Nephrite Jade
Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2
Mineral
Sandstone
Arenite
sedimentary
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Dalmatian Jasper (Dalmatian Stone)
Perthitic Feldspar with Arfvedsonite/Riebeckite
igneous
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Granite Cobble
Granite
igneous
Granite
Granite
igneous
Granite Pebble
Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)
igneous
Granite
Granite (Phaneritic Igneous Rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Intrusive igneous rock (SiO2 range 65-75%)
igneous
Granite
Granite (composed mainly of Quartz, Feldspar, and Mica)
igneous
Shale / Mudstone
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
sedimentary
Granite
Granite (composed primarily of Quartz, Potassium Feldspar, Plagioclase Feldspar, and Biotite/Mica)
igneous
Granite Pebble (Pink/Orthoclase Granite)
Granite (rich in Potassium Feldspar / Orthoclase)
igneous
Granite (Orthoclase rich)
Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)
igneous
Epidote in Quartz
Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)
Mineral