Metamorphic, Likely Sedimentary With Quartz Veins

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Yellow Quartz

Silicon Dioxide (SiO2)

Gneiss with Quartz Veining

Gneiss (High-grade Regional Metamorphic Rock)

Weathered quartz-rich pebble (tentative)

Likely quartz/chalcedony, SiO₂, possibly iron-stained

Quartz (Milk/Citrine variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Slate with Quartz

Low-grade Metamorphic Slate with SiO2 inclusions

Weathered quartz-rich rock, possibly quartzite or quartz vein material

Quartz (SiO₂), likely with feldspar, mica, and iron-oxide staining

Mixed Rock and Mineral Collection

Mixed Assemblage (includes Quartz, Jasper, Feldspar, and Turquoise-colored stones)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz with impurities or Host Rock

SiO2 (Silicon Dioxide) with mixed silicates

Milky Quartz

Silicon Dioxide (SiO2)

Vein-bearing sandstone or quartzite cobble

Quartz-rich sandstone with white quartz veins; possibly metamorphosed to quartzite

Quartz (Milky/Gravel variety)

Silicon Dioxide (SiO2)

Quartz crystal fragment in weathered host rock

Quartz (SiO₂), possibly in a feldspathic or iron-stained matrix

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Banded gneiss

Gneiss, commonly quartz–feldspar–mica gneiss

Quartz Vein in Siltstone

SiO2 (Quartz) on clastic sedimentary matrix

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Veined quartz-bearing metamorphic rock

Likely quartzite or siliceous schist with iron-oxide staining

Jasper (Green Jasper/River Stone)

Silicon Dioxide (SiO2) with impurities

Weathered quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite with iron-oxide staining

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled quartz (likely rose or milky quartz)

Quartz, silicon dioxide (SiO₂)

Quartz-rich breccia or quartzite with iron-oxide veining

Microcrystalline to granular SiO₂ (quartz), with hematite/goethite and minor feldspar or mica

Milky quartz (likely quartz-rich vein fragment)

Quartz, silicon dioxide (SiO₂)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz-rich breccia or iron-stained quartzite

Silica-rich rock dominated by quartz (SiO₂), with minor iron oxides and possible feldspar

Quartzite pebble

Quartzite (SiO2)

Quartz Vein in Mica Schist

Quartz (SiO2) with Muscovite/Biotite Schist

Quartz (likely heat-treated or colored cord)

Silicon Dioxide (SiO2)

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Quartz

Silicon dioxide (SiO2)

Quartz / Iron-Stained Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions/staining

Quartz (Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Pyrite in Matrix (Quartz/Schist)

Iron Sulfide (FeS2)

Quartz / Quartzite Fragment

Silicon Dioxide (SiO2)

Mixed Mineral Collection

Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)

Rounded gray stone, likely slate or fine-grained sandstone

Probable slate (low-grade metamorphosed shale) or lithic sandstone; exact identification requires testing