Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Category
Mineral (Evaporite)
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Gneiss
Gneiss
metamorphic
Granite Cobble (River Stone)
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
igneous
Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)
Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)
igneous or sedimentary
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
metamorphic
Granite
Granite (Alkali-feldspar granite)
igneous
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)
igneous
Granite
Plutonic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Granite
Granite
igneous
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Synthetic (Ceramic)
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Pink Granite
Granite (Alkali-feldspar granite)
igneous
Granite
Phaneritic Plutonic Igneous Rock (Rich in SiO2)
igneous
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Granite
Plutonic felsic igneous rock
igneous
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Mica Schist
Muscovite/Biotite Schist
metamorphic
Pink Granite
Granite (Phaneritic Igneous Rock)
igneous
Pink Granite
Granite (Felsic intrusive igneous rock)
igneous
Granite
Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)
igneous
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
metamorphic
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase)
igneous
Gneiss
Gneiss
metamorphic
Siltstone Pebble
Siltstone (composed of microscopic quartz and clay minerals)
sedimentary
Schist with Quartz/Mica
Mica Schist (primarily Muscovite and Quartz)
Metamorphic
Rough Corundum (likely Sapphire/Zircon-bearing)
Aluminium Oxide (Al2O3)
mineral
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Amazonite
Tectosilicate Microcline (KAlSi3O8)
mineral
Gold-bearing Quartz (Auriferous Quartz)
Quartz (SiO2) with native Gold (Au) inclusions
mineral
Yooperlite (Fluorescent Sodalite-bearing Syenite)
Sodalite-rich Syenite
igneous
Quartz Druzy (Geode Fragment)
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (SiO2) with iron impurities
mineral
Amazonite
K(AlSi3O8) - Microcline
mineral
Greenstone / River Jadeite pebble
Metavolcanic rock / Chlorite or Actinolite-rich schist
metamorphic
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Leopard Skin Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Wonderstone (Banded Rhyolite)
Rhyolite (Silicon Dioxide with Iron Oxide impurities)
igneous