Not A Natural Rock (Man Made Composite)

Faceted colorless gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂), though the strong glare and visible facet pattern could indicate cubic zirconia or lead glass

Blue Goldstone

Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)

Stone bead bracelet

Unidentified polished natural-stone beads; possibly wood-grain jasper, agate, or serpentine

Tumbled chert or jasper pebble

Microcrystalline quartz (SiO₂), likely chert/jasper

Pearl necklace

Pearl, primarily aragonite (CaCO₃) and conchiolin

Engraved purple stone cabochon, possibly amethyst

Unconfirmed; if amethyst, quartz (SiO₂)

Orange tumbled feldspar, likely sunstone

Probably potassium feldspar (orthoclase or microcline); identification is uncertain from the image

Chalk

Calcite (CaCO3)

Smoky Quartz

Silicon Dioxide (SiO2)

Diamond ring

Diamond (crystalline carbon, C) set in a metal ring; the small stones appear diamond-like but cannot be confirmed from the image.

Polished black stone sphere (likely black basalt or black tourmaline)

Most likely fine-grained basalt (plagioclase–pyroxene); mineral identification is uncertain from the image alone

Carved jasper bear figurine

Jasper, microcrystalline quartz (SiO₂), likely brecciated or orbicular jasper

Diamond

Diamond (pure carbon C)

Smoky Quartz

Silicon Dioxide (SiO2)

Diamond (Cut Gemstone)

Natural Carbon (C)

Diamond

Cubic carbon (C)

Black stone-bead bracelet, likely black onyx or agate

Probably chalcedony, microcrystalline quartz (SiO₂); the photo alone cannot confirm the bead material

Fossil or modern bivalve shell

Calcium carbonate shell, likely aragonite (CaCO₃); exact species cannot be determined from the image

Obsidian

Obsidian (volcanic glass, amorphous silica rich rock)

Jade-and-cabochon fruit cocktail ring

Likely nephrite or jadeite (jade) leaves with orange/cream chalcedony or other cabochons; identification from the image is uncertain

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

Blue gemstone cross pendant

Likely faceted blue topaz (Al₂SiO₄(F,OH)₂); identification is uncertain from the image

Diamond-set letter “L” jewelry piece

Diamond (crystalline carbon, C) set in a metal mount; the metal is not identifiable from the image

Lava Rock (Dyed)

Basalt / Volcanic scoria

Diamond ring

Diamond, crystalline carbon (C)

Likely graphite-rich schist or graphite-bearing metamorphic rock

Graphite (C) in a mica/quartz-rich matrix; exact rock name requires testing

Diamond ring

Diamond, crystalline carbon (C), set in a gold-colored metal ring

Likely gold-colored metal ring with a possible gemstone

Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting

Sandstone Concretion

Sedimentary concretion

Rough Diamond

Diamond (pure Carbon, C)

Pumice

Pumice (Vitreous volcanic rock)

Yellow faceted gemstone, likely citrine or synthetic glass

Citrine (quartz, SiO₂) is the leading natural possibility; visual identification is uncertain from the photograph

Que Sera Stone (Llanite with Feldspar and Quartz)

Rhyolite with blue quartz and pink orthoclase (Llanite-type quartz porphyry)

Polished amethyst-bearing quartz

Quartz, SiO₂; purple coloration from irradiation and trace iron

Pearl

Biogenic CaCO3 (Aragonite and Calcite)

Gabbro

Gabbro

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Pearl (Biogenic Mineraloid)

Calcium carbonate (CaCO3) primarily as Aragonite

Green stone disk, possibly serpentine or jade

Indeterminate from the photograph; candidates include serpentine-group minerals (approximately Mg₃Si₂O₅(OH)₄) or jadeite jade (NaAlSi₂O₆).

Tumbled cream-colored pebble

Likely quartz-rich sandstone or limestone; exact identification requires testing

Diamond

Diamond (Pure Carbon, C)

Unidentified polished dark gemstone cabochon

Possibly hematite, obsidian, jet, or dark agate; image insufficient for a definitive identification