Man Made Glass (Often Grouped With Minerals In Lapidary)

Chert (specifically Blue Chert/Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Yellow Jasper variety)

Silicon Dioxide (SiO2)

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2 with iron oxide inclusions)

Greasy Quartz (likely carved Milky Quartz or Aventurine)

Silicon Dioxide (SiO2)

Chert Breccia

Brecciated Microcrystalline Quartz (SiO2)

Chert (specifically Silex or Flint)

Microcrystalline Quartz (SiO2)

Rose Quartz

Rose Quartz (SiO₂)

Jasper with Iron Staining

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Banded Chert (or Banded Jasper)

Silicon Dioxide (SiO2) with Iron Oxide impurities (Hematite/Goethite)

Quartzite

Quartzite (SiO2)

Oceanside Agate (Orbicular Agate)

Silicon Dioxide (SiO2) - Variety of Chalcedony

Chert

Microcrystalline Quartz (SiO2)

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Chert (specifically Yellow/Common Opal or Jasper mixture)

Silicon Dioxide (SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper

Jasper (Silicon Dioxide, SiO2)

Adventurine (Green Quartz)

Silicon Dioxide (SiO2) with Fuchsite inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Apache Tear (Obsidian)

Volcanic glass (SiO2 - Silicon Dioxide)

Obsidian

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)

Chert (Yellow Jasper/Agatized Chert)

Microcrystalline Quartz (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Red Quartzite

Quartzite (SiO2 with iron oxide impurities)

Herkimer Diamond

Double-Terminated Quartz (SiO2)

Chert Pebble

Microcrystalline Quartz (SiO2)

Chert (Common Opal/Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (Jasper/Agate variety)

Microcrystalline quartz (SiO2)

Banded Chert (Flint)

Cryptocrystalline Quartz (SiO2)

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert (and Flint)

Silicon dioxide (SiO2) - Microcrystalline quartz

Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)

Diorite (Igneous rock, intrusive, intermediate composition)

Chert (specifically Tan/Brown Chert)

Chert (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Apache Tear

Hydrated Obsidian (Volcanic Glass)

Smoky Quartz on Feldspar (Granite Pegmatite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)

Chert (Jasper/Flint Pebble)

Microcrystalline quartz (SiO2)

Chert (Red Jasper)

Microcrystalline Quartz (SiO2)

Jasper (with Manganese or Iron inclusions)

Silicon Dioxide (SiO2)

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Rose Quartz

Rose Quartz (SiO₂)