Mineral, Specifically A Variety Of Quartz

Chert (varietal Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Dinosaur Bone (Gembone)

Petrified Dinosaur Bone (Apatite/Silica replacement)

Diabase (Greenstone)

Diabase (Dolerite)

Apache Tear

Hydrated Obsidian (Natural Volcanic Glass)

Jasper and Quartz River Cobble

Silicon Dioxide (SiO2) with Hematite inclusions

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

River Jasper (Chert/Chalcedony mix)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Epidote with Quartz and Feldspar

Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)

Orange Calcite

Calcium Carbonate (CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Jasper (with Manganese or Iron inclusions)

Silicon Dioxide (SiO2)

Mahogany Obsidian

Obsidian (Volcanic Glass with Hematite/Magnetite inclusions), SiO2

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with iron and other impurities

Banded Calcite (often marketed as Mexican Onyx or Onyx Marble)

Calcite (Calcium Carbonate, CaCO3)

Larimar

Pectolite (NaCa2Si3O8(OH))

Blue Dyed Agate

Silicon Dioxide (SiO2)

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Diamond

Carbon (C), specifically in an isometric crystal system.

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

White Marble

Calcite-rich Metasomatized Carbonate (CaCO3)

Green Calcite

Calcite (CaCO3)

Chert (or Flint)

Mocrocrystalline Quartz (SiO2)

Vesicular Basalt (River Pebble)

Vesicular Basalt

Moss Agate

Chalcedony (Silicon Dioxide, SiO2) with dendritic inclusions

Quartz Geode (partially formed/chalcedony with iron staining)

Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides

Chert (Nodule)

Silicon Dioxide (SiO2)

Chalcedony (variations like Agate or Jasper)

Chalcedony (SiO₂ - microcrystalline quartz)

Quartz (on matrix)

Quartz (Silicon Dioxide, SiO₂)

Peach Moonstone

Orthoclase (Potassium Aluminum Silicate), KAlSi3O8

Yellow Jasper

Silicon Dioxide (SiO2) - Opaque Chalcedony

Yellow Calcite

Calcium Carbonate (CaCO3)

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

Basalt (Greenstone)

Amygdaloidal Basalt / Chloritized Basalt

Fuchsite in Quartz

K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2

Jasper Geode

Silicon Dioxide (SiO2) with impurities

Amazonite

Amazonite / Microcline (KAlSi3O8)

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O