Gold and Diamond
Native Gold (Au) and Diamond (C)
Category
Browse industrial byproduct (anthropogenic material) specimens identified by the Rock Identifier community.
Gold and Diamond
Native Gold (Au) and Diamond (C)
Quartzite
Quartzite (SiO2)
Garnet
Garnet Group (formula varies, e.g., Almasndine: Fe3Al2(SiO4)3)
Quartz Vein in Host Rock (clastic sediment)
Silicon Dioxide (SiO2) in matrix
Quartz on Chlorite Schist
Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)
Schist
Mica Schist
Gold-bearing Quartz
Native Gold (Au) in Quartz (SiO2) matrix
Quartz with Mica inclusions (likely Iron-stained)
Silicon Dioxide (SiO2) with Phyllosilicates
Moqui Marble
Iron Oxide Concretion
Quartz Pebble
Silicon Dioxide (SiO2)
Tektite (Indochinite)
Tektite (Silica-rich natural glass)
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
Garnet Schist
Almandine-Mica Schist
Diamond (Round Brilliant Cut)
Diamond (Pure Carbon, C)
Chert / Jasper
Silicon Dioxide (SiO2)
Diamond in Kimberlite
Kimberlite host rock with C (Carbon) inclusion
Milky Quartz Mushroom Carving
Quartz (Silicon Dioxide, SiO2)
Kimberlite
Kimberlite (Group I or II)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2)
Pumice
Vesicular volcanic glass (primarily SiO2)
Schist
Mica Schist
Quartz Pebble
Silicon Dioxide (SiO2)
Biotite Schist (with Garnet and Pyrite)
K(Mg,Fe)3AlSi3O10(OH,F)2 (Biotite focus)
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
White Sapphire
Corundum (Al2O3)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Cubic Zirconia (in Jewelry)
Zirconium Dioxide (ZrO2)
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
Bornite (Peacock Ore)
Bornite (Copper iron sulfide - Cu5FeS4)
Anthracite Coal
Anthracite (Carbon)
Ruby (Corundum)
Aluminum Oxide (Al2O3) with Chromium traces
Riverstone Quartzite
Quartzite (primarily SiO2)
Quartz / Limestone Gravel
SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite or Quartz (SiO2/Silicates)
Chalk
Calcium Carbonate (CaCO3)
Basalt
Extrusive mafic igneous rock
Quartzite
Metamorphosed Quartz Sandstone (SiO2)