Man Made Object (Simulant)

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Agate

SiO2 (Silicon dioxide, chalcedony variety)

Red Jasper

Jasper (a variety of Quartz, SiO2)

Red Jasper (beads)

SiO₂ (Silicon Dioxide)

Tumbled carnelian agate with dark mineral inclusions

Carnelian, an orange variety of microcrystalline quartz (chalcedony), SiO₂; dark inclusions are likely iron oxides/hydroxides, possibly hematite, goethite, or a basaltic/matrix fragment

Calcite

Calcite (CaCO₃)

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Red Jasper (possibly)

Jasper (a variety of Chalcedony, SiO2)

Basalt

Basalt

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2, with varying amounts of Calcite, Pyrite, and Sodalite).

Rose Quartz

Rose Quartz (SiO₂)

Quartz (in matrix)

Quartz (SiO₂)

Likely serpentinized ultramafic rock (serpentinite)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, possibly with magnetite, chromite, and brucite

Agate (various color varieties)

SiO₂ (Silicon Dioxide)

Pink quartz bead strand (likely rose quartz or pink dyed quartz)

Quartz, silicon dioxide (SiO₂); probable rose quartz variety, possibly dyed or treated quartz/chalcedony

Unakite (polished/tumbled)

Unakite, a hydrothermally altered granite composed mainly of epidote, pink potassium feldspar (orthoclase/microcline), and quartz

Fluorite

Calcium Fluoride (CaF2)

Rose Quartz (tumbled)

Rose Quartz (variety of Quartz, chemical formula SiO₂)

Blue Quartz

Quartz (SiO2) with inclusions

Rose Quartz

Rose Quartz (SiO₂)

Zebra Jasper

Silicon dioxide (SiO2) with various impurities

Rose Quartz

Silicon dioxide (SiO2) with trace impurities of titanium, iron, or manganese

Rose Quartz

Rose Quartz (SiO2)

Fossilized Wood (Petrified Wood)

Silicified Wood (primarily quartz/chalcedony replacing organic matter)

Calcite

Calcite (CaCO 3)

Polished white agate or chalcedony bead

Microcrystalline quartz (SiO₂), likely chalcedony/agate with iron-oxide staining or a brown mineral inclusion

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Jasper

Silicon Dioxide (SiO2)

Onyx Marble (also commonly called Onyx)

Calcite (CaCO3), often with other mineral impurities

Jasper

Silicon Dioxide (SiO2) - a variety of Chalcedony (Cryptocrystalline Quartz)

Moss Agate

Moss Agate (a variety of Chalcedony, SiO ₂)

Azurite-Malachite (often called Azerite Malachite or Azurmalachite)

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)

Weathered sandstone pebble

Quartz-rich sandstone, likely ferruginous sandstone

Polished multicolored jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron- and manganese-stained chert

Rose Quartz

Rose Quartz (SiO₂)

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Rose Quartz

Rose Quartz (SiO2)

Bivalve Shell (Fossil or Contemporary)

Class Bivalvie (various genera and species of clams, cockles, etc.)

Larimar

Pectolite (a blue variety of Pectolite)

Polished orbicular jasper / brecciated jasper

Jasper, microcrystalline quartz (SiO₂), with iron-oxide and clay-rich inclusions

Rose quartz cabochon (probable)

Quartz, silicon dioxide (SiO₂); pink color typically caused by trace elements and microscopic inclusions

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate) - a variety of Microcline Feldspar