Metamorphic (Altered Igneous Rock)

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Quartz Pebble (often referred to as 'Sea Glass' or 'River Stone' when worn smooth)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Green Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz (with Druzy/Polished Edge)

Smoky Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Water-Worn Pebble)

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Quartzite with Iron Inclusions

Metamorphosed Sandstone (SiO2 dominated)

Muscovite Mica (Granitic Pegmatite)

Muscovite - KAl2(AlSi3O10)(OH)2

Schist

Mica Schist

Granite

Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8), and Mica)

Nuummite

Antophyllite-Gedrite Orthoamphibole (Mg,Fe)7Si8O22(OH)2

Greenstone

Metabasalt (composed mainly of chlorite, epidote, and actinolite)

Gneiss

Gneiss

Ruby Zoisite

Anyolite (Ca2Al3(SiO4)3(OH) + Al2O3:Cr)

Greenstone / Nephrite Jade

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

Greenschist

Greenschist (Chlorite-actinolite schist)

Healer's Gold (Pyrite and Magnetite in Schist)

Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist

Schist

Mica Schist

Greenstone (Metabaltic/Greenschist)

Chlorite schist / Meta-basalt

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)

Granite

Phaneritic Acidic Igneous Rock (Granite Group)

Granodiorite

Granodiorite (calc-alkaline phaneritic igneous rock)

Greenstone

Metabasalt (often contains Chlorite, Actinolite, and Epidote)

Greenstone

Metabasalt / Chlorite-Epidote Schist

Gneiss (specifically Banded Gneiss)

Gneiss

Greenstone

Greenschist / Meta-basalt

Granite

Granite (Alkali-feldspar, Quartz, and Plagioclase composition)

Dragon Stone (Dragon Blood Jasper)

Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Epidote with Feldspar/Quartz (Unakite-like)

Epidotized Granite (Ca2(Al,Fe)3(SiO4)3(OH) + KAlSi3O8)

Quartzite Pebble

Quartzite (primarily SiO2)