Mineral In A Matrix (Likely Quartz Or Feldspar)

Sedimentary rock with quartz veining

Laminated siltstone or mudstone with hydrothermal quartz veins

Orbicular Rhyolite (Rainforest Jasper)

Rhyolite containing Spherulites (SiO2 with impurities)

Pegmatite (likely Granitic Pegmatite)

Pegmatite (a coarse-grained igneous rock, often with granitic composition)

Dalmatian Stone

Dalmatian Jasper / Feldspathic Igneous Rock

Gneiss (specifically Pink Gneiss)

Gneiss (high-grade regional metamorphic rock)

Beach Pebble (likely Quartz or Chalcedony)

Silicon Dioxide (SiO2)

Basalt with Plagioclase Feldspar

Basalt (mafic extrusive igneous rock) with plagioclase feldspar phenocrysts

Glacial Cobble (likely Granitic or Gneissic)

Granite/Gneiss Glacial Erratic

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Flowerstone

Porphyritic Basalt or Porphyritic Andesite

Granite (with alteration)

Granite (Felsic intrusive igneous rock)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

K2 Jasper (K2 Granite)

Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)

Smoky Quartz and Feldspar Pegmatite

Granitic Pegmatite (chiefly SiO2 and KAlSi3O8)

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Granite

Granite (Phaneritic igneous rock)

Copper-bearing Quartz (likely Chrysocolla or Malachite staining)

Cuprite, Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) or Malachite staining on Quartz/Host Rock

Granite

Felsic Intrusive Igneous Rock (SiO2, Al2O3, K2O, Na2O)

Dalmatian Stone

Peralkaline Quartz-Feldspar Rock

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Greywacke (River/Beach Pebble)

Greywacke (Impure Sandstone)

Granite

Phaneritic Plutonic Felsic Rock (Granite)

Quartz (likely a clear or rock crystal variety)

Quartz (SiO2 - Silicon Dioxide)

Quartz Pebble (Chalcedony/Agate variety)

Silicon Dioxide (SiO2)

Chrysocolla in Matrix

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix

Gneiss (specifically a granitic gneiss cobble)

Gneiss (high-grade regional metamorphic rock)

Granite

Phaneritic Plutonic Felsic Rock

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Quartzite with Hematite

Metamorphosed Quartz Sandstone (SiO2 with Fe2O3 inclusions)

Garnet-Mica Schist

Garnetiferous Porphyroblastic Schist

Porphyritic Rhyolite (Red Porp)

Porphyritic Rhyolite (Felsic volcanic rock)

Beryl (likely Aquamarine or Green Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Corundum (Sapphire/Ruby in Matrix)

Aluminium oxide (Al2O3)

Banded Gneiss

Gneiss (Metamorphic Rock)

Gneiss (with Mica and Quartz)

Gneissic Metamorphic Rock

Moonstone with Black Tourmaline

Orthoclase (KAlSi3O8) with Schorl inclusions (NaFe3Al6(BO3)3Si6O18(OH)4)

Granite Pebble

Granite (Phaneritic intrusive igneous rock consisting of Quartz, Alkali Feldspar, and Plagioclase)

Granite Cobble

Plutonic Igneous Rock (Granitic)

Granite (likely a river or beach pebble)

Granite (a felsic intrusive igneous rock primarily composed of quartz, feldspar, and mica)

Granite Pebble

Felsic Plutonic Rock (primarily Quartz, Feldspar, and Mica)

Granite (Alkali-feldspar rich)

Phaneritic Felsic Igneous Rock (Major components: KAlSi3O8, SiO2)

Porphyritic Basalt (Chinese Writing Stone/Flower Stone)

Porphyritic Basalt (primarily Plagioclase Feldspar in a Mafic groundmass)