Amorphous Solid

Mangano Calcite

Manganocalcite (Ca,Mn)CO3

Hematite

Iron(III) oxide, Fe2O3

Blue Goldstone

Man-made glass with cobalt and metal flecks

Tumbled blue stone, likely blue aventurine or dyed quartzite

Quartz (SiO₂), likely with inclusions or artificial dye; exact identification requires testing

Blue Calcite

Calcium Carbonate (CaCO3)

Citrine Quartz

Silicon Dioxide (SiO₂) with iron impurities

Black Granite (Basalt or Gabbro)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Peacock Ore (Bournite/Chalcopyrite)

Bornite (Cu5FeS4) or Acid-Treated Chalcopyrite (CuFeS2)

Quartzite river stone

Quartzite (mostly SiO2)

Zebra Jasper (Zebra Stone)

Tumbled Silicon Dioxide (SiO2) with impurities

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH))

Crazy Lace Agate

Agate (Cryptocrystalline Quartz), SiO2

Chevron Amethyst

SiO2 (Quartz with Manganese/Iron impurities)

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)

Peacock Ore (Chalcopyrite/Bornite)

Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)

Porphyritic Rhyolite

Porphyritic Rhyolite (compositionally similar to granite)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions

Vesicular Basalt with Epidote

Vesicular Basalt (Mg, Fe)2SiO4 with Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Granite with Orthoclase and Hematite Staining

Phaneritic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)

Tumbled brown quartz/chalcedony (probable)

Quartz, SiO₂; possibly brown chalcedony or jasper

Polished ocean jasper (orbicular jasper), probable

Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide and other mineral inclusions

Satin Spar Gypsum (Selenite Wand)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Citrine

Silicon dioxide (SiO2)

Copper Ore (likely Chalcopyrite in Matrix)

Chalcopyrite (CuFeS2)

Giallo Ornamental Granite

Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)

Yellow Quartz (Citrine Quartz or Yellow Chalcedony)

Silicon Dioxide (SiO2)

Quartz geode (likely amethyst-bearing geode)

Microcrystalline quartz and drusy quartz; SiO₂, with possible iron-stained or amethyst quartz

Lava Rock

Basalt / Scoria

Red Scoria

Vesicular Basaltic Andesite

Vesicular Basalt

Basalt (extrusive volcanic rock)

Basalt with Quartz/Calcite Veining

Aphanitic Mafic Basalt with secondary mineral veining

Amber-colored Jasper

Silicon Dioxide (SiO2)

Chert (Jasper/Carnelian variety)

Microcrystalline Quartz (SiO2)

Scoria

Scoria (Vesicular Basaltic Rock)

Green Jasper

Jasper (Silicon Dioxide, SiO2)

Graywacke with Quartz Vein

Lithic Sandstone (Graywacke)

Raw Topaz

Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2

Basalt with Scoria/Vesicular texture

Vesicular Basalt (primarily Plagioclase feldspar, Pyroxene, and Olivine)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Scoria (Vesicular Basalt)

Vesicular Basalt

Porphyritic Rhyolite (Red Porphyry)

Porphyritic Rhyolite (Felsic volcanic rock)