Indeterminate

Unidentifiable blurred specimen

Cannot be determined from the image

Small pale mineral fragment, likely quartz or calcite

Tentatively quartz (SiO₂) or calcite (CaCO₃); image resolution prevents confident identification

Unknown brown-and-gold rock fragment

Undetermined; possibly iron-stained quartz, mica schist, or sulfide-bearing ore

Polished brown stone or bead

Unidentified; possibly polished jasper, agate, or iron-rich quartzite

Rough amber-colored quartz or calcite fragment

Likely quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Rounded quartz-rich pebble, possibly chert or weathered sandstone

Indeterminate siliciclastic rock; likely microcrystalline quartz (SiO₂) or quartz-feldspar sandstone

Gemstone-set silver jewelry piece

Likely mixed faceted gemstones in a silver-colored metal setting; stones may include sapphire, ruby/garnet, and yellow sapphire or citrine, but the image is insufficient for species-level identification.

Faceted gemstone in a jewelry setting

Indeterminate from image; likely quartz, cubic zirconia, or another transparent faceted stone

Uncertain polished mineral specimen

Indeterminate; possibly quartz or feldspar with iron-oxide staining

Rounded tan pebble

Unidentified fine-grained rock; the image does not show enough detail for a reliable species-level identification.

Unidentified pale yellow-green mineral/rock fragment

Possibly sulfur-bearing mineral, serpentine, or weathered limestone; exact identification requires testing

Unidentified rough mineral/rock fragment

Indeterminate from image; possibly quartz-rich material or weathered carbonate rock

Rounded gray pebble, likely quartz-rich stone

Indeterminate; possibly quartzite or a weathered granitic pebble

Orange-brown tumbled mineral specimen

Indeterminate; possibly iron-stained chalcedony, quartz, or jasper

Painted/tumbled stone specimens

Unidentified natural rock; likely a dark silicate stone and a weathered brown stone

Pale yellow tumbled stone, possibly calcite or quartz

Uncertain; likely calcite (CaCO₃) or pale chalcedony/quartz (SiO₂)

Likely fluorescent mineral specimen

Uncertain; possibly willemite (Zn₂SiO₄) or fluorite (CaF₂)

Uncertain gray-and-white rock fragment

Likely quartz-bearing granite or quartzite; exact identification requires testing

Small tumbled pebble (likely quartz or feldspar)

Indeterminate; probable quartz (SiO₂) or feldspar

Dark rock/mineral fragment

Undetermined; possibly magnetite-rich basalt or iron sulfide

Likely metallic mineral specimens

Probably native iron or iron oxide/hydroxide material; exact identification requires testing

Small rounded pebble

Unidentified lithic clast; likely fine-grained sandstone, mudstone, or basalt

Rounded pebble, likely quartz-rich sandstone or chert

Indeterminate lithic clast; possibly quartz arenite or microcrystalline quartz (SiO₂)

Rounded pebble, likely quartz-rich sandstone or weathered granite

Indeterminate lithic clast; possible granite or quartzose sandstone

Faceted gemstones, likely assorted quartz or glass-like gems

Not determinable from the photograph; possible quartz (SiO₂), topaz, or synthetic cubic zirconia

Rounded pale-green pebble, likely serpentinite or altered basalt

Probable serpentinite (serpentine-group minerals) or weathered mafic rock; exact identification requires testing

Unidentified rough mineral fragments

Likely quartz- or feldspar-bearing rock; exact identification requires testing

Green faceted gemstone, likely synthetic glass or chrome-dyed stone

Undetermined; possibilities include green tourmaline, synthetic emerald, glass, or dyed quartz

Unidentified dark, flat specimen

Indeterminate; image resolution is insufficient for mineral identification

Small gray-green pebble (likely fine-grained volcanic rock)

Indeterminate; possibly andesite or basalt

Small dark rock fragment

Indeterminate; possibly basalt or scoria

Unidentified small mineral fragments

Likely quartz- or feldspar-rich material; species cannot be determined reliably from the image

Unable to Identify (Image Obscured)

Note regarding image quality

Quartz-bearing reddish metamorphic rock, possibly ferruginous quartzite or jasper vein

Quartz (SiO₂) with iron oxides; likely quartzite or iron-rich jasper

Small pink mineral fragment

Indeterminate; possibly rose quartz or feldspar

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Polished ironstone or hematite-rich river pebble

Ironstone, likely hematite/goethite-bearing quartz or chert (Fe₂O₃/FeO(OH) with silica)

Metallic sulfide ore specimen

Likely pyrite-bearing massive sulfide, possibly pyrrhotite or galena; exact identification requires testing

Tiny rounded metallic-looking pebble, possibly pyrite or a metal-rich mineral

Uncertain from image; possible pyrite (FeS₂), chalcopyrite (CuFeS₂), or magnetite (Fe₃O₄)

Small red-brown mineral or rock fragment

Unidentified; possibly iron-oxide-rich jasper, garnet, or weathered sulfide

Rounded gray pebble, likely limestone or fine-grained basalt

Indeterminate from image; possible micritic limestone (calcite, CaCO₃) or basalt (plagioclase, pyroxene, minor oxides)