Mineral (Specifically, A Variety Of The Mineral Species Pyrope Almandine Garnet)

Garnet

Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3

Agate

Agate (Silicon Dioxide, SiO2)

Jade (likely Jadeite or Nephrite)

Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Tumbled red jasper (probable)

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Garnet

Garnet group [X3Y2(SiO4)3]

Schist

Schist (various mineral compositions)

Fossil Shark Tooth (Otodus obliquus)

Otodus obliquus; hydroxyapatite (mineralized form Ca5(PO4)3(OH))

Polished red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Polished banded agate heart

Microcrystalline quartz (SiO₂), primarily chalcedony with iron-oxide inclusions

Tumbled agate (likely moss or scenic agate)

Microcrystalline quartz, primarily chalcedony (SiO₂), with iron-oxide and possible mineral inclusions

Tumbled jasper (likely ocean jasper or brecciated jasper)

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Tumbled carnelian (likely)

Cryptocrystalline quartz, SiO₂; orange chalcedony colored mainly by iron oxides

Polished yellow jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing iron oxides and other silicates

Tumbled yellow jasper (likely silicified/iron-stained chert)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and darker inclusions

Red jasper (tumbled)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Polished banded agate (likely blue lace agate)

Chalcedony, microcrystalline SiO₂, with iron and other trace-element impurities

Polished brecciated jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide and possibly chlorite inclusions

Polished jasper pendant

Jasper, an opaque, microcrystalline variety of quartz (SiO₂)

Yellow Aventurine

Quartz (SiO2) with inclusions

Polished iron-rich jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides

Amazonite

Microcline (K(AlSi3O8))

Demantoid Garnet on Matrix

Demantoid (variety of Andradite Garnet) - Ca3(Fe3+)2(SiO4)3

Diamond

Diamond (C)

Desert Rose

Gypsum (variety Selenite) or Baryte, CaSO4 · 2H2O

Black Onyx

Silicon dioxide (SiO2)

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

Polished orbicular jasper (likely ocean jasper)

Silicified volcanic rock; microcrystalline quartz/chalcedony (SiO₂) with iron oxides and altered volcanic minerals

Peach Moonstone

Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)

Polished black tourmaline

Schorl tourmaline — NaFe3Al6(BO3)3Si6O18(OH)4

Milky Quartz

Silicon Dioxide (SiO2)

Clear gypsum (selenite)

Gypsum, CaSO₄·2H₂O; selenite is its transparent to translucent crystalline variety

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Biotite Schist with Garnet

Garnet-Biotite Schist

Tumbled jasper (possibly orbicular jasper)

Microcrystalline quartz, SiO₂; jasper is an opaque variety of chalcedony

Tumbled pale stone, likely quartz-rich rock or calcite

Uncertain from image; possibilities include microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Labradorite

(Ca, Na)(Al, Si)4O8

Likely garnet-bearing mica schist

Mica schist, possibly containing garnet (garnet–mica schist)

Yellow jasper (likely iron-rich chert)

Microcrystalline quartz, SiO₂, colored by iron oxides/hydroxides

Tumbled brown jasper

Microcrystalline quartz/chalcedony (SiO₂), iron-oxide colored

Polished brown jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing iron-oxide and clay inclusions

Tumbled red/orange jasper

Jasper, microcrystalline quartz (chalcedony; SiO₂) with iron-oxide impurities

Tumbled jasper

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