Metamorphic (Pseudo Igneous)

Quartz

Silicon Dioxide (SiO₂)

Chalcedony (Banded/Mottled Variety)

Chalcedony (a cryptocrystalline variety of Quartz, SiO2)

Laterite

Laterite (no specific mineral formula as it's a rock type)

Ruby

Corundum (Al₂O₃) with Chromium (Cr)

Included Quartz Beads (likely Phantom Quartz or Garden Quartz)

Quartz (SiO2) with various mineral inclusions

Calcite

Calcite (CaCO3)

Prasiolite and Quartz Crystal Cluster

Quartz (SiO2); Prasiolite is a variety of Quartz

Gossan (Iron Hat)

Limonitic Gossan (predominantly FeO(OH)·nH2O)

Earth

Terra / Earth

Aventurine (likely Green Aventurine)

Quartz (SiO2) with included minerals (Fuchsite or Chlorite for green color)

Pyrite in Quartz (Drill Core)

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions

Quartz Vein in Host Rock (Pebble)

Quartz (SiO2) with sandstone or siltstone matrix

Quartz (variety of colors)

SiO2 (Silicon Dioxide)

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Quartzite

Quartzite (primarily composed of SiO O₂)

Rutilated Quartz

SiO2 (Quartz) with TiO2 (Rutile inclusions)

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Rutilated Quartz (likely Citrine or Smoky Quartz with Rutile inclusions)

SiO2 with TiO2 inclusions (Quartz with Rutile)

Quartz (River-worn Pebble)

Quartz (SiO2)

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Quartz (chalcedony variety) or Limestone with Quartz Veins

SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)

Sapphire (likely blue synthetic sapphire or blue glass in a ring)

Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.

Quartz with inclusions (likely Chlorite or Hornblende) and country rock

SiO2 (Quartz) with associated ferromagnesian minerals

River Rocks (Polished River Pebbles)

Stream-rounded clastic sediments

Limonitic Gossan

Goethite/Limonite aggregate after sulfide

Crushed Stone / Gravel (Multiple Rock Types)

Lithic fragments (undifferentiated)

Quartz with Basalt inclusion

Silicon Dioxide (SiO2) with mafic silicate rock

Unakite (often traded as Dragon Blood Jasper)

Epidotized Granite

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in matrix

Calcite (or Alabaster, if truly carved)

Calcium Carbonate (CaCO3)

Wishing Rock (Quartz Vein in Host Rock)

Silicon dioxide (SiO2) vein in various host rocks

Pet Rock (Man-made Quartzite or Granite Cobble)

Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica

Lapis Lazuli (blue bead) and Moss Agate (green heart)

Lapis Lazuli (lazurite-based rock) and Moss Agate (SiO2 with manganese/iron inclusions)

Green Slag Glass (Cullet)

Amorphous Silica (Industrial Glass Byproduct)

Eagle Eye / Grey Tiger Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Tiger's Eye

Silicon Dioxide with Crocidolite (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with FeOOH inclusions)

Tiger's Eye (Mineral Collection)

Tiger's Eye (SiO2 with crocidolite inclusions)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)