Mineral Based Composite

Basalt

Aphanitic mafic volcanic rock (primarily plagioclase feldspar and pyroxene)

Dendritic Limestone

Calcite with Manganese Oxide (Manganese Dendrites)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Schist

Mica Schist

Vesicular Basalt

Vesicular Basalt (Aphanitic Mafic Rock)

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Diorite

Diorite (Intermediate intrusive igneous rock)

Ferruginous Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Scoria (with Iron Oxidation)

Vesicular Basalt / Scoria

Red Shale

Fissile Siliciclastic Sedimentary Rock

Chert (specifically Flint or Gray Chert)

Silicon Dioxide (Microcrystalline Quartz), SiO2

Fuchsite

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

Aquamarine on Feldspar Matrix

Beryl (Be3Al2Si6O18) with Potassium Feldspar (KAlSi3O8)

Black Veined Jasper (Spiderweb Jasper)

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety

River Cobble (Quartzite-rich Sandstone)

Clastic Sedimentary Rock (Litharenite/Quartzite transition)

Basalt (with possible Olivine inclusions)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Granite

Granite (Phaneritic intrusive igneous rock)

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Ironstone (likely Limonite or Goethite)

Ferruginous sedimentary rock (FeO(OH)·nH2O)

Sedimentary Breccia

Breccia (Clastic Sedimentary Rock)

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)

Recrystallized Calcite (CaCO3)

Basalt

Basalt (Mafic volcanic rock)

Diorite

Intrusive Igneous Rock (Intermediate Composition)

Mica Schist

Mica Schist (primarily Muscovite and/or Biotite composition)

Basalt with Quartz Veining

Basalt (Mafic Extrusive Igneous Rock) with SiO2 (Silicon Dioxide) veins

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Labradorite

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

Citrine Quartz

Silicon Dioxide (SiO2)

Aqua Aura Quartz

Silicon Dioxide (SiO2) bonded with Gold (Au)

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Schist

Mica Schist (primarily Muscovite and Quartz)

Tree Agate

Silicon Dioxide (SiO2) with Chlorite inclusions

Biotite Schist

Biotite Schist

Chert (also known as Flint or Common Chalcedony)

Cryptocrystalline Silica (SiO2)