Man Made Metamorphic Style Composite

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Blue goldstone beads

Man-made aventurine glass (silica glass with metallic copper inclusions), not natural lapis lazuli

Ruby in Zoisite

Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Quartzite (or Quartz Slab)

SiO2 (Silicon Dioxide)

Mixed polished gemstone and mineral collection

Primarily quartz varieties (SiO₂), plus probable aventurine, rose quartz, amethyst, agate, jasper, serpentine, feldspar, and possibly dyed or man-made glass pieces

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Ruby in Zoisite

Anyolite (composite of Corundum [Al2O3] and Zoisite [Ca2Al3(SiO4)(Si2O7)O(OH)])

Ornamental ring with likely blue sapphire and diamonds

Blue corundum (sapphire), Al₂O₃; surrounding stones appear diamond, C, set in gold-colored metal

Polished greenstone/serpentine pebble (probable)

Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile); possible accessory olivine or chlorite

Colorless faceted quartz-like gemstone

Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia

Quartzite

Metamorphic Quartzite (SiO2)

Slate

Metamorphic Pelitic Rock

Quartzite

Metamorphic Quartzite (SiO2)

Slate

Metamorphic Pelitic Rock

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartz Arenite

Quartzite

Metamorphic Rock (Mainly SiO2)

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)

Conglomeratic concrete or asphalt aggregate surface with dark bituminous chunks

Polymictic gravel aggregate; dark pieces likely bitumen/asphalt, not a natural rock

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite

Metamorphic Quartzite (primarily SiO2)

Quartzite

Metamorphic Quartzite (primarily SiO2)

Quartzite

Metamorphic Quartz Rock (SiO2)

Green Quartzite

Metamorphic Quartz Sandstone (SiO2)

Tumbled serpentine

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximately Mg₃Si₂O₅(OH)₄

White Marble

Recrystallized Calcite (CaCO3)

Blue slag glass or dyed glass-like industrial material

Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass

Yellow faceted gemstone, likely citrine or yellow sapphire

Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)

Tumbled quartz-rich pebble

Microcrystalline quartz (SiO₂), possibly milky quartz or quartzite

Quartzite

Metamorphic quartz rock (SiO2)

Quartzite

Metamorphic Quartz Rock (SiO2)

Blue faceted gemstone ring, likely synthetic sapphire or blue topaz

Uncertain from image; possible corundum (Al₂O₃) or topaz (Al₂SiO₄(F,OH)₂)

Jasper

Silicon dioxide (SiO2) with impurities

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

Quartzite

Metamorphic Quartzite (SiO2)