Mineral Like Byproduct

Sandstone (lithic wacke/conglomerate mix)

Clastic Sedimentary Rock (SiO2 with lithic fragments)

Yellow Aventurine

Silicon Dioxide (Quartz with inclusions of Mica or Pyrite), SiO2

Purple Lepidolite with Quartz

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Yellow Ochre / Limonite

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Diorite

Intermediate plutonic igneous rock

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Banded Chert

Cryptocrystalline Quartz (SiO2)

Shale with Coprolite influence

Argillaceous sedimentary rock (Shale/Mudstone)

Dendritic Limestone

Calcite with Manganese Oxide (Manganese Dendrites)

Hag Stone (Holed Quartzite Pebble)

Quartzite (SiO2 based) with natural vug or erosion hole

Ironstone Concretion

Limonitic/Hematitic Concretion

Sandstone

Sandstone (principally SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Fluorite Cleavage Octahedron

Fluorite (Calcium Fluoride, CaF2)

Desert Rose

Gypsum (variety Selenite) - CaSO4·2H2O

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron inclusions

Vesicular Basalt

Extrusive mafic igneous rock

Schist

Mica Schist

Schist

Schist (various mineralogical compositions including mica, chlorite, talc, etc.)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Pink Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Himalayan Salt / Halite

Sodium Chloride (NaCl)

Kaolinite (China Clay / Chalky Claystone)

Al2Si2O5(OH)4

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Siltstone / Slate

Siltstone / Low-grade Slate

Limonite Concretion

Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Granitic Gneiss

Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)

Schist

Schist (Metamorphic Rock)

Lepidolite

K(Li,Al)3(Al,Si,IV)4O10(F,OH)2

Larimar (Slab)

Pectolite [NaCa2Si3O8(OH)]

Petrified Wood

Silicified Wood (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Quartz with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate [Ca2(Al,Fe)3(SiO4)3(OH)]

Limonite (Oxidized Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Quartz

Silicon Dioxide (SiO2)

Green Fuchsite and Quartz

K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)