Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2)
igneous
Category
Mineral Health
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Siltstone Pebble
Siltstone (composed of microscopic quartz and clay minerals)
sedimentary
Diamond (or high-quality simulant like Cubic Zirconia)
Carbon (C) - Native Element
mineral
Diamond
Carbon (C)
mineral
Banded Gneiss and Siltstone River Stones
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Granite Cobble (River Stone)
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
igneous
Gneiss
Gneiss
metamorphic
Granite
Plutonic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)
igneous
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Synthetic (Ceramic)
Granite
Granite
igneous
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
metamorphic
Granite
Granite (Alkali-feldspar granite)
igneous
Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)
Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)
igneous or sedimentary
Pink Granite
Granite (Alkali-feldspar granite)
igneous
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Granite
Plutonic felsic igneous rock
igneous
Granite
Phaneritic Plutonic Igneous Rock (Rich in SiO2)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Pink Granite
Granite (Phaneritic Igneous Rock)
igneous
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Pink Granite
Granite (Felsic intrusive igneous rock)
igneous
Mica Schist
Muscovite/Biotite Schist
metamorphic
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
metamorphic
Granite
Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)
igneous
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Marble
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Yellow Aventurine
Quartz containing Muscovite or Mica inclusions (SiO2)
mineral
Quartzite (Coldwater or Druzy Quartz over Quartzite)
SiO2 (Silicon Dioxide)
metamorphic
Pegmatite (Granite Pegmatite)
Intrusive Igneous Rock (Granite Pegmatite)
igneous
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Epidote
Epidote - Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase)
igneous
Gneiss
Gneiss
metamorphic
Amygdaloidal Basalt with Agate/Quartz Infill
Basalt with Secondary Silicate Mineralization (SiO2)
igneous
Siltstone with Sandstone Bands
Siltstone (composed of Quartz and Clay minerals)
sedimentary
Iron Meteorite (Individual)
Siderite (composed of Kamacite and Taenite minerals)
igneous