Tumbled quartz pebble
Quartz (silicon dioxide, SiO₂), likely milky or smoky quartz
mineral
Category
Man Made Object (Simulant)
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Blue lace agate (tumbled)
Microcrystalline quartz, SiO₂ (chalcedony variety)
mineral
Tumbled nephrite jade (likely)
Nephrite jade; fibrous amphibole aggregate, chiefly actinolite–tremolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
metamorphic
Red jasper fragment
Jasper, microcrystalline quartz (SiO₂) colored chiefly by iron oxides
mineral
Sodalite beads
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Labradorite
Plagioclase Feldspar ((Na,Ca)(Al,Si)4O8)
mineral
Quartzite
Quartzite (Metamorphosed Quartz Arenite)
metamorphic
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Charoite
K(Ca,Na)2Si4O10(OH,F)wH2O
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2) with traces of Titanium, Manganese, or Iron
mineral
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Jasper
Jasper (SiO2)
sedimentary
Bloodstone
Chalcedony (cryptocrystalline quartz)
Mineral/Semiprecious Stone
Amber
Succinite (fossilized resin)
Organic Mineraloid
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Moqui Marble (Iron-Oxide Concretion)
Iron Oxide Concretion (Fe2O3)
sedimentary
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Banded Calcite (often sold as 'Mexican Onyx')
Calcium Carbonate (CaCO3)
sedimentary
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Mineral/Mineraloid within a rock matrix
Malachite
Copper carbonate hydroxide (Cu2CO3(OH)2)
mineral
Amazonite
Potassium Feldspar (Microcline), K(AlSi3O8)
mineral
Banded Calcite (often commercially called Mexican Onyx)
Calcite (Calcium Carbonate, CaCO3)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO₂)
Mineral
Smurf Rock (Fictional Interpretation)
Cyanus Anthropomorphicus (Geologic Simulation)
Artificial/Fantasy Object
Mother of Pearl (Nacre)
Calcium Carbonate (primarily aragonite, with conchiolin)
Organic Gemstone/Biomineral
![Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral](https://media.rockidentification.com/92ebc6b5-08ac-4229-a727-57a096ec7f2c-thumbnail.jpg)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
mineral
Tiger's Eye
Silicon dioxide with crocidolite fibers (SiO2 with chrysotile amphibole inclusions)
Mineral
Greenstone (or River-tumbled Basalt / Greywacke with Epidote)
Metabasalt / Greenschist facies rock
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Dalmatian jasper (likely orbicular microgranite)
Quartz–feldspar–biotite/pyroxene microgranite; commonly marketed as Dalmatian jasper
igneous
Polished black stone, likely obsidian
Volcanic glass; predominantly silica-rich rhyolitic glass (SiO₂), identification uncertain from the image
igneous
Polished zebra jasper
Jasper, microcrystalline quartz (SiO₂), with iron-oxide and manganese-rich banding
metamorphic