Mineral Like Byproduct

Fluorite on Matrix

Calcium Fluoride (CaF2)

Petrified Wood

Silicified wood (Quartz, SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Bull Quartz

Quartz (Silicon Dioxide, SiO2)

Howlite

Howlite (Ca2B5SiO9(OH)5)

Limonite (Yellow Ochre)

FeO(OH)·nH2O (Hydrous iron(III) oxide-hydroxide mixture)

Turquoise and Hematite

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)

Fossilized Shark Tooth

Carcharocles or Otodus sp. (Micro-fossilized)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Mica Schist

Mica Schist (Quartz-Biotite-Muscovite Schist)

Diorite

Diorite (an intrusive igneous rock)

Turquoise and Hematite

CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Fe2O3 (Hematite)

Rose Quartz

Silicon Dioxide (SiO2) with trace Manganese, Titanium, or Iron

Lemon (Mock specimen mimicking Citrine/Sulfur)

Citrus x limon

Quartz

Silicon Dioxide (SiO2)

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Peacock Ore (Bornite or Iridescent Chalcopyrite)

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with tarnish

Green Aventurine

Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)

Limonite and Hematite Gossan

Hydrated Iron Oxide Mix (FeO(OH)·nH2O) / Ferric oxide (Fe2O3)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Quartz with Iron Oxide

Silicon Dioxide (SiO2) with Fe2O3 inclusions

Quartz Geode

Silicon Dioxide (SiO2)

Pink Sapphire (Corundum)

Aluminum Oxide (Al2O3) with Chromium/Iron impurities

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite or Quartz (SiO2/Silicates)

Lepidolite

K(Li,Al)3(Al,Si,3O10)(F,OH)2

Lepidolite

K(Li,Al)3(Al,Si,Rb,Cs)4O10(F,OH)2

Quartz Pebble (with Hematite Inclusions)

Silicon Dioxide (SiO2)

Sphalerite

Zinc sulfide (Zn, Fe)S

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Lepidolite (Lithium Mica)

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Lepidolite (in Quartz Matrix)

Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2]

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Orpiment

Orpiment (As2S3)

Yellow Aventurine

Silicon Dioxide with inclusions (SiO2 + Muscovite/Fuchsite)

Red Sandstone

Arenite (Iron-rich)

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Quartz Geode Fragment

Crystalline Silicon Dioxide (SiO2)

Gossan (Iron Hat)

Limonitic Gossan (predominantly FeO(OH)·nH2O)

Sandstone (specifically Banded Sandstone)

Clastic sedimentary rock (primarily SiO2)