Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Hag Stone

Perforated Sedimentary Rock (typically Limestone or Sandstone)

Grey Agate (Banded Chalcedony)

Agate (Silicon Dioxide - SiO2)

Milky Quartz with Country Rock contact

Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock

Plagioclase Feldspar (specifically Albite/Oligoclase)

(Na,Ca)(Si,Al)4O8

Diamond Drill Core (Greenschist and Quartzite)

Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (SiO2 based)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Green Quartz (Prasiolite/Adventurine)

Silicon Dioxide (SiO2) with inclusions

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Hematite

Iron(III) oxide (Fe2O3)

Fuchsite

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

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Peacock Ore

Bornite (Cu5FeS4)

Rough Rose Quartz

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Fuchsite

Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Quartz Pebble

Silicon Dioxide (SiO2)

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Basalt Scoria

Vesicular Basalt

Orthoclase Feldspar (Salmon variety)

Orthoclase, KAlSi3O8

Blue Topaz

Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)

White Quartz

Silicon Dioxide (SiO2)

Red Garnet (Pyrope or Almandine)

Magnesium aluminum silicate (Mg3Al2(SiO4)3) or Iron aluminum silicate (Fe3Al2(SiO4)3)

Gneiss (specifically Biotite Gneiss)

Gneiss (high-grade metamorphic rock primarily composed of Silicates)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz (likely a form of massive or vein quartz)

Quartz (SiO₂)

River Cobble (likely Basalt or Metagraywacke)

Non-specific water-worn lithic fragment

Orange Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions

Smoky Quartz

Silicon Dioxide (SiO2)

White Topaz

Al2SiO4(F,OH)2 (Aluminium Silicate Fluoride Hydroxide)

Clear Quartz

Silicon Dioxide (SiO2)

Biotite Schist

Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]

Lapis Lazuli

Complex mixture of minerals, primarily Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Dendritic Agate

Chalcedony (SiO2) with manganese/iron oxide inclusions