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ID: 2A7845
Carving materials, Morgan Gem Hall, 1965
ID: ptc-5991
Illustration of famous diamonds from Tavernier, 1681
ID: ptc-5985
Illustration showing diamond cutting and polishing, from The Nature of Diamonds by John Mawe, 1823
ID: ptc-5984
"Peculiar Diamonds" of India and Brazil, from A Treatise on Diamonds and Precious Stones by John Mawe, 1823
ID: ptc-480
Quartz plate in polarized light
ID: ptc-479
ID: ptc-486
Native copper, Michigan
ID: ptc-484
Antimony stibnite, ore
ID: ptc-489
Spodumene, variety Hiddenite
ID: 260769
Selenite window, Acoma, New Mexico
ID: 100213323_39
Fine leaf native gold specimen on milky quartz from California, about 3 inches high, Guggenheim Hall of Minerals, postcard
ID: 100213323_38
Specimen of crystalized native gold, about 7 inches across, from the Empire Star Mine of Grass Valley, California, exhibited in the Guggenheim Hall of Minerals, postcard
ID: 100213323_37
Amethyst, Guerera, Mexico, Harry Frank Guggenheim Hall of Minerals, postcard
ID: 328171
Quartz lined thunder eggs or geodes, Rhyolite nodules
ID: ptc-2808
Figure with bird, carved relief
ID: ptc-2807
Opal, replacing clam shell, 69 carats, Australia
ID: ptc-1164
Halite crystal model
ID: ptc-2083
"The Newmont Gold," a mass of crystallized gold (leaf), 1 kilogram, 18.8 x 13.7 cm, discovered in mud-filled pocket, 1951, Gift of Newmont Mining Corporation, Empire Star Mines
ID: ptc-958
Tourmaline, pink crystals, Pala, California
ID: ptc-956
Tourmaline (pink) and quartz (colorless), Pala, California
ID: ptc-957
Tourmaline crystal, cross section, Madagascar
ID: ptc-955
ID: ptc-2063
Diana at the Hunt, helmet shell cameo, carved calcite, probably 19th century, Torre del Greco, Italy
ID: ptc-960
Tourmaline crystal showing striations, Brazil
ID: ptc-959
Tourmaline, green crystals on quartz, Brazil
ID: ptc-727
Sculpture, carved rose quartz
ID: ptc-723
Vessel, jade
ID: ptc-711
Emerald ring and crystal, Patricia Emerald, Colombia
ID: ptc-712
ID: K13790
Beryl, variety Morganite, American Museum of Natural History
ID: K13784
Diamond, octahedral crystal, 25 carats
ID: K13059
Azurite, Tsumeb, Namibia
ID: K11932
Paramelaconite, Bisbee, Arizona
ID: K11931
Scorodite, Zacatecas, Mexico
ID: K11634
Labradorite, Oregon
ID: K11631
Calcite with barite, Fritzington, England
ID: K11628
Fluorapatite, Cerro del Mercado, Durango, Mexico
ID: K11619
Fluorite, yellow, Cornwall, England
ID: K11236
Topaz, 99 carats, from the Ural Mountains, Russia
ID: K11206
Seated God of Happiness, Chinese, carved in malachite
ID: K11202
Kashmir blue star sapphire
ID: K7027
Decorative gold weights, Ashanti (Asante), Africa
ID: K14818
Andradite, variety Demantoid garnet, emerald-green brilliant cut, 4.50 carats, Poldenwaja, Siberia
ID: K14817
Cat's eye, Chrysoberyl gemstone
ID: K14800
Corundum crystal, variety ruby, in marble matrix, L 2 cm, (Burma) Myanmar
ID: K14497
Canyon Diablo,1.2 km wide meteor crater, aerial view, Arizona
ID: K14472
Zircon, violet-brown brilliant-cut stone, 18.9 carats, (Ceylon) Sri Lanka
ID: K14471
Beryl, variety Heliodor, faceted stone, 5.34 carats, Brazil
ID: K14470
Spinel, violet, brilliant-cut stone, 46.48 carats, Sri Lanka
ID: K14469
Beryl, variety Morganite, heart-shaped, faceted stone, 58.79 carats, Madagascar
ID: K14468
Zircon, intense blue, brilliant-cut stone, 208.65 carats, Kandy area, Sri Lanka
ID: K14467
Oval-cut spinel, cobalt blue, 27 carats, Sri Lanka
ID: K14466
Zoisite, variety Tanzanite, blue-violet prismatic crystal, H 3 cm
ID: K14465
Chrysoberyl, yellow-green twinned crystal group (sixling) 5 cm across, Brazil
ID: K14464
Elbaite, variety Rubellite, pink faceted stone, 40.12 carats, Madagascar
ID: K14463
Fluorapatite, yellow-green oval-cut, 28.65 carats, Mexico
ID: K14462
Quartz, variety Amethyst, oval-cut stone, 158 carats, Ural Mountains, Russia
ID: K13925
Notched Boulder, 45.5 lbs, Jadeite, Myanmar
ID: K13924
Fluorite, green fancy-cut stone, 101.35 carat, Westmoreland, New Hampshire
ID: K13923
Turquoise, polished cabochon, 160 carats, Kingman, Arizona
ID: K13922
Gem-quality turquoise, 45 pound boulder, Bodalla, Australia
ID: K13921
Quartz, variety Trystine, 45.71 carats, Puerto Suarez, Bolivia
ID: K13920
Cameo portrait of child, sanadine, variety moonstone
ID: K13919
Spinel, deep ruby-red octahedral crystals in marble, up to 5mm across, Mogok, Myanmar (Burma)
ID: K13870
Topaz, 3 x 3 cm, Little Three Mine, California
ID: K13869
Stibnite prismatic crystals, 26.2 x 6.2 cm, Ichinokawa mine, Japan
ID: K13867
Schorl, stubby black tourmaline crystals, up to 4 cm high, on matrix of tan colored albite, Little Three Mine, California
ID: K13866
Rosalite, pink crystals, 1 cm across on matrix, Bou Azzer Mines, Morocco
ID: K13865
Quartz, large violet Amethyst crystals, 7 pounds, Upper Providence, Pennsylvania, found November, 1887
ID: K13864
Microcline, tan-colored Carlsbad twin, 8 x 4 x 3.5 cm, Himalaya Mine, California
ID: K13863
Manganite, group of lustrous blocky, black crystals, 15 x 10 cm, Harz, Germany
ID: K13862
Lepidolite, pseudo-hexagonal crystals of lavender color, average size 2 cm, on 18 x 12 x 11.2 cm matrix, Little Three Mine, California
ID: K13861
Hydroxyl-herderite, tan colored single crystal, 10 x 5 cm, Brazil
ID: K13834
Gold, electrum flat crystals with trigons, octahedral form 111, field of view 3 cm wide, Rosia-Montana, Romania
ID: K13833
Gold, aborescent wires on iron-stained quartz, field of view is 1 cm, Bement Collection, American Museum of Natural History
ID: K13832
Thick plate of flattened gold octahedral crystals, 9.5 x 6.0 cm
ID: K13831
Specimen with gold micro octahedra on drusy quartz matrix, L 12 cm
ID: K13830
Crystallized gold showing lattice-like network of intergrown crystals, 4.5 x 3.0 cm, United States
ID: K13829
Erythrite cobalt bloom radiating as needle-like crystals, on matrix, 6 cm across, Schneeberg, Germany
ID: K13828
Elbaite tourmaline, variety Verdelite, L 6.3 cm, Himalaya Mine, California
ID: K13827
Elbaite tourmaline, variety Bicolor, 9.6 x 3.8 x 1.8 cm, Himalaya Mine, California
ID: K13826
Elbaite tourmaline, variety Rubellite, transparent pink crystal, 5.5 cm long on quartz crystal matrix
ID: K13825
<em>The Microphone</em>, Elbaite tourmaline, variety Rubellite, L 25 cm, Himalaya Mine, California
ID: K13824
Copper crystals, average size 2 cm across, 25 x 20 cm, Lake Superior, Michigan
ID: K13823
Chondrodite, rounded brown crystals up to 1.5 cm across on matrix, Tilly Foster Mine, New York
ID: K13822
Black, striated chalcocite crystals on matrix, up to 2 cm long, Bristol, Connecticut
ID: K13821
Beryl, variety Morganite, pink flattened complex single crystal, 6.5 x 5.0 x 2.5 cm, Afghanistan
ID: K13820
Beryl, variety Morganite, 2.5 cm across, attached to a bicolored elbaite crystal, 10.7 x 7.5 x 5.5 cm, Tourmaline Queen Mine, California
ID: K13819
Barite, golden brown scepter-like crystal, L 10 cm, growing on drusy barite matrix, Frizington, England
ID: K13818
Azurite, crystal group on matrix, average 3 cm across, Bisbee, Arizona
ID: K13817
Armstrong Diamond, emerald-cut stone set in ring with two tapered baguettes, 14.11 carats
ID: K13797
Polished slab, Labradorite, 7.5 cm across, displaying labradorescence (rainbow-like play of colors), Canada
ID: K13796
Grossular (garnet), deep emerald-green oval-cut stone, 8.14 carats, Tsavo National Park, Kenya
ID: K13795
Spessartine, garnet crystal (2 cm across) on smoky quartz, Little Three Mine, Ramona, California
ID: K13794
Zircon, natural brown crystal, L 7.5 cm, Delaney, Ontario
ID: K13792
Elbaite (variety Rubellite), gem-quality crystal on matrix, 10 cm, Stewart Mine, California
ID: K13791
Elbaite, tourmaline (variety watermelon), four single gem-quality crystals, largest L 10 cm, Himalaya Mine, California
ID: K13789
Beryl, variety Morganite, gem-quality crystal in matrix, 6 cm across, Tourmaline Queen Mine, California
ID: K13788
Beryl, variety aquamarine, Brazil
ID: K13787
Beryl, variety Aquamarine, four faceted stones set with melee diamonds in platinum; carat weights: clip, 41.25; ring, 31.64; earrings, 16.89 and 16.32