Mineral (Silicate Variety)

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)

Green Chert (Jasper)

Microcrystalline Quartz (SiO2) with chlorite/epidote inclusions

Yellow Jade (often Serpentine or Dolomite)

Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.

Polished magnetite-rich ironstone (possible magnetite pebble)

Magnetite, Fe₃O₄; possibly magnetite-bearing basalt or ironstone

Osumilite in Granite Matrix

(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30

Serpentine

Serpentine group minerals (e.g., Antigorite, Chrysotile, Lizardite). Chemical formula: (Mg, Fe)₃Si₂O₅(OH)₄

Greenschist / Chloritaform Schist

Chlorite Schist (Group of Silicate Minerals)

Chrysocolla in Malachite

Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)

Garnet

Garnet-group silicate, likely almandine–spessartine; general formula X₃Y₂(SiO₄)₃

Garnet

Almandine/Pyrope Garnet (Silicate Mineral Group)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Beryl (Aquamarine)

Beryllium aluminum silicate (Be3Al2Si6O18)

Banded Calcite (Onyx Marble)

Calcite (CaCO3) / Travertine

Planet Earth

Gaia (Silicate Terrestrial Planet)

White marble (likely calcitic marble)

Calcite-rich marble; primarily calcium carbonate, CaCO₃

Copper-bearing altered rock, likely chrysocolla-bearing quartzite or breccia

Quartz (SiO₂) with copper silicate minerals, chiefly chrysocolla [approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O], and iron oxides

Chert (Jasper-like Silicate)

Silicon Dioxide (SiO2)

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Slag (Industrial Byproduct)

Ferrous/Non-ferrous Silicate

Porphyritic Basalt

Porphyritic Basalt (Silicate Rock)

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Biotite Schist

Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]

Brecciated Chert

Sedimentary Chert (SiO2) with Calc-Silicate mineralization

Blue Quartz

Silicon Dioxide (SiO2) with fibrous inclusions (such as tourmaline, magnesio-riebbeckite, or crocidolite)

Small reddish-brown mineral fragment, likely quartz-bearing rock

Indeterminate; possibly iron-stained quartz or feldspar-rich stone

Black Tourmaline (Schorl)

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

Tumbled quartz-bearing rock, possibly garnet-bearing quartzite

Quartz-dominant silicate rock; visible minerals may include quartz, iron oxides, and dark mica or amphibole

Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

Hemimorphite on Limonite Gossan

Hemimorphite (Zn4Si2O7(OH)2·H2O) on Limonite matrix

Red Jasper

Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions

Dragon Blood Jasper

Epidote with Pietersite or Red Jasper (Silicate mineral)

Bumblebee Jasper

Anhydrous Calcium Carbonate with Sulfur and Arsenic (Orpiment/Realgar)

Chert (specifically Green Chert/Jasper)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Beryl (likely Aquamarine or Heliodor variant)

Beryllium aluminum silicate (Be3Al2Si6O18)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Zircon

Zircon (Zirconium Silicate - ZrSiO4)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)