Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Chert (with Chalky Cortex)

Silicon Dioxide (SiO2)

Mica (likely Muscovite)

Muscovite / KAl2(AlSi3O10)(OH)2

Moonstone (Feldspar)

Orthoclase feldspar, (K,Na)AlSi3O8

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (River Cobble)

Clastic Sedimentary Rock (primarily Quartz with Feldspar)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Tiger's Eye

SiO2 (Silicon Dioxide with inclusions of Goethite/Limonite)

Limonite (Iron Ore)

Limonite; FeO(OH)·nH2O

Unakite

Epidotized Granite

Rose Quartz

Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Unakite

Unakite (altered granitic rock)

Quartz Vein in Host Rock (Likely Slate or Shale)

Hydrothermal Quartz (SiO2) in Pelitic host rock

Quartz (Milky Quartz / Quartzite)

Silicon Dioxide (SiO2)

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

Red Jasper

Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)

Unakite (Tumbled)

Epidotized Granite

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Pink Granite

Phaneritic Plutonic Igneous Rock (high K-feldspar content)

Quartz

Silicon dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Red Granite

Phaneritic Plutonic Felsic Rock (rich in Potassium Feldspar)

Pink Granite (Alkali Feldspar Granite)

Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8)

Chrysocolla in Matrix

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

Phyllite

Phyllite (Foliated metamorphic rock)

Aventurine

Quartzite with inclusions (SiO2 containing Fuchsite chrome mica)

Quartz / Rock Crystal

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Blue Sapphire (Tumbled/Polished)

Corundum (Al2O3)

Marble

Recrystallized Calcite Rock (CaCO3)

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Ferruginous Oxides

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Milky Quartz

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Unakite

Epidotized Granite

Schist

Mica Schist

Diorite

Diorite (an intrusive igneous rock)

Quartzite with Garnet

Garnetiferous Quartzite (SiO2 + X3Y2(SiO4)3)