Synthetic Glass (Often Categorized As A Simulated Mineral)

Muscovite Mica (likely on Quartz/Feldspar)

Muscovite - KAl2(AlSi3O10)(OH)2

Fluorite (Green)

Calcium Fluoride (CaF2)

Chert (or Chalcedony)

Chert (Microcrystalline Quartz, SiO2)

Quartzite

Quartzite (primarily SiO2)

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Fluorite

Fluoride (Calcium Fluoride - CaF2)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Milky Quartz

Silicon Dioxide (SiO2)

Glauconitic Sandstone (or Greensand)

Glauconitic Siliciclastic Rock (Containing (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Jasper

Silicon dioxide (SiO2) with impurities

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Chert (often called Flint)

Chert (Cryptocrystalline Silica, SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Granite

Granite (Felsic Plutonic Rock)

Quartzite Pebble

Quartzite (primarily SiO2)

Chert (specifically Red Chert/Jasper nodule)

Microcrystalline Quartz (SiO2)

Quartzite with Iron Banding

Metamorphosed Quartz-rich Sandstone (SiO2 with Fe2O3 inclusions)

Chert / Yellow Jasper

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite River Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebbler

Quartzite (SiO2)

Chert (Black Chert)

Microcrystalline Silica (SiO2)

Chert (specifically Flint)

Chert (SiO2)

Obsidian (likely Golden Sheen Obsidian or Rainbow Obsidian, given the subtle sheen visible on some beads)

Obsidian (volcanic glass, predominantly SiO2 with various impurities)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Chert (Iron-stained or Jasperoid)

Microcrystalline Quartz (SiO2)

Banded Chert

Silicon Dioxide (SiO2)

Jasper and Basalt Mix (Dark Chert/Basalt River Pebble)

Silicon Dioxide (SiO2) or Mafic extrusive igneous rock

Green Rutilated Quartz

Silicon Dioxide with Actinolite inclusions (SiO2 + Ca2(Mg,Fe)5Si8O22(OH)2)

Tree Agate

SiO2

Diamond (or Lab-Grown Cubic Zirconia)

Carbon (C)

Ironstone Concretion / Goethite-Hematite Nodule

Goethite/Hematite (α-FeO(OH) / Fe2O3)

Chert (variations include Flint or Jasper)

Chert (SiO2)

Red Quartzite (River Stone)

Quartzite (primarily SiO2)

Yellow Quartz (Citrine Quartzite)

Silicon Dioxide (SiO2)

Rutilated Quartz

SiO2 (Quartz) with TiO2 (Rutile inclusions)

Epidote in Quartz

Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)

Obsidian

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)

Milky Quartz

Silicon Dioxide (SiO2)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Chert (often referred to as Flint or Jasper when pigmented)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Red Garnet

Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)