Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Category
Manufactured Glass
Browse manufactured glass specimens identified by the Rock Identifier community.
Learn about Manufactured Glass in the encyclopedia
View all →
Slag Glass
Silicon dioxide with impurities
mineral
Lapidary Wax (imitation/wax model)
Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)
mineral
Heliotrope (Bloodstone) Sphere
Cryptocrystalline Quartz (SiO2 with Iron Oxide inclusions)
sedimentary
Limestone with Calcite Crystals
Sedimentary Rock containing Calcium Carbonate (CaCO3)
sedimentary
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
mineral-based human-made alloy
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Non-geological
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Synthetic/Consumer Product
Sandstone (Weathered / Crushed)
Quartz Sandstone
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
mineral
Swirled Agate Bead
Silicon Dioxide (SiO2)
mineral
Quartz-bearing granite or gneiss fragment
Granite/gneiss composed mainly of quartz (SiO₂), feldspar, and minor mica or ferromagnesian minerals
igneous
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Anthropogenic (Man-made)
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Black tumbled stone, likely basalt or black jasper
Most consistent with fine-grained basalt (mainly plagioclase and pyroxene); exact identification requires testing
igneous
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Man-made object (coin)
Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Anthropogenic Mineral Mimic
Glazed Ceramic Tile
Fused Silicate-Clay composite
Synthetic (Man-made material mimicking natural stone)
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Synthetic material (Not a rock or mineral)
K-Feldspar (Potassium Feldspar / Pink Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Antropogenic (Man-made glass byproduct)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Ring with an Orange Inlay
N/A (Man-made object)
Man-made Object (Ring)
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Concrete or artificial stone core sample
Artificial conglomerate
sedimentary
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)
Small tumbled dark stone, possibly basalt or slag
Likely fine-grained basalt; exact identification is uncertain from the photograph
igneous
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral