Blue Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Category
Mineral (Specifically A Mineraloid)
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Dyed Blue Agate
Silicon dioxide (SiO2) with artificial pigment
mineral
Citrine or Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz on Feldspar (Granite Pegmatite)
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-feldspar, Quartz, and Biotite)
igneous
K2 Jasper (K2 Granite)
Azurite in Granite (Biotite Granite with Azurite inclusions)
igneous
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Sunstone
Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)
mineral
Orca Agate
Chalcedony (Microcrystalline Quartz, SiO2)
mineral
Amber
Amber (Fossilized Tree Resin)
Mineral
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or limonite inclusions
sedimentary
Fossilized Shark Tooth
Carcharocles or Otodus sp. (Micro-fossilized)
sedimentary
Fancy Jasper
Silicon Dioxide (SiO₂)
sedimentary
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Mushroom Carving
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
K2 Jasper (K2 Granite)
Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)
igneous
Bumblebee Jasper
Fibrous Calcite and Orpiment/Realgar/Pyrite mix
gemstone
Smoky Quartz and Citrine
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Larimar
Pectolite (NaCa2Si3O8(OH))
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2) with iron impurities
mineral
Ocean Jasper
Silicon Dioxide (SiO2) - Orbicular Jasper / Chalcedony
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Pearl
Calcium Carbonate (CaCO3)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Pebble
Clast (specifically a granule or small pebble)
Sedimentary
Sandstone (lithic/greywacke variety)
Arenite (composed primarily of SiO2 with various lithic fragments)
sedimentary
Pink Granite
Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)
igneous
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
mineral