Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Category
Manufactured Glass
Browse manufactured glass specimens identified by the Rock Identifier community.
Learn about Manufactured Glass in the encyclopedia
View all →
Sandstone
Arenite (SiO2 principal)
sedimentary
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2) with miscellaneous inclusions
mineral
Sandstone (likely Quartzose)
Arenite (SiO2 principal mineral)
sedimentary
Sandstone with Iron Staining
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
Coarse Sand or Fine Gravel
Detrital Sedimentary Fragments (mostly SiO2)
sedimentary
Red Sandstone (with possible iron oxide staining)
Sandstone (primarily Quartz with Hematite/Goethite cement)
sedimentary
Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 cement)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (likely with Quartz Veining)
Arenite (primarily SiO2)
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Man-made glass with suspended copper, cobalt, or manganese particles
man-made glass
Quartz Sand Gravel
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble (often referred to as 'Sea Glass' or 'River Stone' when worn smooth)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Blue-dyed howlite beads (likely)
Howlite, Ca₂B₅SiO₉(OH)₅, commonly dyed blue to imitate turquoise
mineral
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
sedimentary
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Common Grains)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert (varietal: Flint/Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Carnelian Beads
Silicon Dioxide (Variety of Chalcedony), $SiO_2$
gemstone