Mineral Side Rock

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Milky quartz crystal

Quartz, silicon dioxide (SiO₂)

Clear Quartz

Silicon Dioxide (SiO2)

Amethyst quartz cluster

Quartz, SiO₂; purple variety colored mainly by iron impurities and irradiation

Amethyst quartz cluster

Quartz, silicon dioxide (SiO₂), purple variety amethyst

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Clear Quartz

Silicon Dioxide (SiO2)

Garnet (specifically Almandine or Pyrope)

Almandine (Fe3Al2Si3O12) or Pyrope (Mg3Al2Si3O12)

Amethyst (vibrant lilac/purple variety)

Silicon Dioxide (SiO2) with iron impurities

Emerald (Rough)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Blue Sapphire (likely costume glass imitation)

Corundum (Al2O3) with iron/titanium impurities

Clear quartz crystal (likely tumbled or naturally worn)

Quartz, silicon dioxide (SiO₂)

Fossilized Shark Tooth (Drum Fish Tooth/Pavement Tooth)

Sparidae or Sciaenidae (Crushing plate dental fossil)

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Amethyst cluster/geode half

Amethyst, purple quartz (SiO₂)

Milky quartz (likely iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Fossilized Blastoid

Pentremites (Class Blastoidea)

Sand Tiger Shark Tooth

Carcharias taurus (fossilized)

Amethyst Quartz

SiO2 (Silicon Dioxide with Iron impurities)

Quartz crystal fragment

Quartz (silicon dioxide, SiO₂), likely milky or iron-stained quartz

Raw quartz crystal (likely citrine or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Polished quartz crystal point

Quartz (silicon dioxide, SiO₂)

Almandine Garnet & Tumbled Citrine Quartz

Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Amethyst Agate (Polished Point)

Silicon Dioxide (SiO2) with iron impurities

Quartz crystal (likely milky or cloudy quartz)

Quartz, silicon dioxide (SiO₂)

Clear quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Amethyst

Amethyst (Silicon Dioxide with iron impurities, SiO2)

Amethyst

Silicon dioxide (SiO2)

Almandine Garnet (weathered)

Almandine (Fe3Al2(SiO4)3)

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Quartz variety)

Amethyst [Silicon Dioxide (SiO2)]

Clear Quartz

Silicon Dioxide (SiO2)

Likely clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Tumbled fossil coral (often sold as “petoskey stone” or fossil coral)

Fossilized colonial coral; commonly Hexagonaria percarinata in true Petoskey stones, though this specimen’s pattern may represent another fossil coral

Epidote with Quartz and Feldspar

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

Quartz

Silicon Dioxide (SiO2)

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Amethyst cluster

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation