Metamorphic Rock (For Both Nephrite And Jadeite)

Quartzite

Quartzite (SiO2 silicon dioxide)

Ferruginous Quartzite (Red Sandstone/Quartzite)

Quartzite with Iron inclusions (SiO2 + Fe2O3)

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Quartzite

Quartzite (mostly SiO2)

Quartzite

Quartzite (primarily SiO2)

Red Quartzite River Pebble

Quartzite (SiO2 with iron oxide inclusions)

Red Quartzite (Strawberry Quartz)

Quartzite (SiO2 with iron oxide inclusions)

Pink Quartzite

Quartzite (primarily SiO2)

River Cobble (Phyllite or Quartzite)

Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)

Grey Quartzite Pebble

Quartzite (primarily SiO2)

Marble

Recrystallized Calcite (CaCO3)

Quartzite (Beach Pebble)

Quartzite (Composition: SiO2)

Orange Quartzite (Tumbled Beach Pebble)

Quartzite (primarily SiO2)

Unakite (or Epidotized Granite)

Epidotized Granite (Composition: KAlSi3O8, Ca2(Al,Fe)3(SiO4)3(OH), SiO2)

Quartzite Pebble (River Rock)

Quartzite (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂)

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Quartzite

Quartzite (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Smoky Quartz in Matrix

Silicon dioxide (SiO2) within Pegmatite/Gneiss

Quartz

Silicon Dioxide (SiO2)

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Quartzite (Beach Pebble)

Quartzite (composed primarily of SiO2)

Epidote (or Epidote-rich rock)

Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Diamond

Diamond (pure carbon; C)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Quartzite

Quartzite (primarily SiO2)

Serpentinite

Serpentinite (Mg, Fe, Ni)₃Si₂O―(OH)₄

Orange Quartzite (Tumbled)

Quartzite (SiO2)

Quartzite (River Pebble)

Quartzite (SiO2)

Lapis Lazuli

Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Tiger's Eye (Rough)

Pseudomorph of Quartz after Crocidolite (SiO2)

Milky Quartz (Common Quartz)

Quartz (Silicon Dioxide, SiO2)

River Quartz Pitting / Quartzite Pebble

Quartzite (primarily SiO2)