Man Made Silicate (Anthropogenic Glass)

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Halite

Halite (NaCl)

Quartz Crystal

Quartz (SiO₂)

Banded Chert

Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)

Sandstone (Pebble/Cobble)

Sandstone (arenite is a more precise term for sandstone with less than 15% matrix; this specimen appears to be a lithic or quartz arenite)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Fluorite (likely)

Calcium Fluoride (CaF2)

Rose Quartz

Rose Quartz (SiO2)

Green Aventurine

Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Diamond

Diamond (pure carbon; C)

Granite

Granite (a felsic intrusive igneous rock)

Quartz (likely)

Quartz (SiO2 - Silicon Dioxide)

Chert (often referred to as 'Jasper' when red)

Chert (microcrystalline quartz, SiO₂)

Epidote (or Epidote-rich rock)

Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).

Banded Chert or Chert with Quartz Veins

Chert (SiO2)

Onyx Marble (also commonly called Onyx)

Calcite (CaCO3), often with other mineral impurities

Granite

Granite (felsic intrusive igneous rock)

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Amethyst Geode/Cluster

Quartz (SiO2) - variety Amethyst

Granite (likely a river or beach pebble)

Granite (a felsic intrusive igneous rock primarily composed of quartz, feldspar, and mica)

Labradorite (likely Black Labradorite or Larvikite)

Labradorite (Na,Ca)(Al,Si)4O8. If a rock, it is typically anorthosite, gabbro, or norite, or a variety of syenite called Larvikite if it is specifically from Larvik, Norway.

Peridot and Citrine Gemstones (in a ring setting)

Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)

Quartzite

Quartzite (primarily composed of SiO O₂)

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Black Chert

Chert (microcrystalline quartz)

Puddingstone (Jasper Conglomerate)

Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)

Banded Agate (variety of Chalcedony)

Agate (SiO2)

Granite

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica)

Red Chalcedony (likely dyed)

Chalcedony (a variety of Quartz), SiO2

Agate

Agate (Cryptocrystalline Variety of Quartz, SiO2)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Agate

Agate (a cryptocrystalline variety of Quartz, SiO₂)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Puddingstone

Conglomerate (specifically a type of jasper conglomerate or quartz conglomerate)