Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Opal> ?p ?o }
- Opal abstract "Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Opal is the national gemstone of Australia.The internal structure of precious opal makes it diffract light; depending on the conditions in which it formed, it can take on many colors. Precious opal ranges from clear through white, gray, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. Of these hues, the black opals are the most rare, whereas white and greens are the most common. It varies in optical density from opaque to semitransparent.".
- Opal thumbnail Rainbow_Shield_Mintabie_Opal_Pendant.jpg?width=300.
- Opal wikiPageExternalLink opal.html.
- Opal wikiPageExternalLink opal.
- Opal wikiPageExternalLink fossils.
- Opal wikiPageID "54513".
- Opal wikiPageLength "34403".
- Opal wikiPageOutDegree "153".
- Opal wikiPageRevisionID "702213429".
- Opal wikiPageWikiLink Amorphous_solid.
- Opal wikiPageWikiLink Amulet.
- Opal wikiPageWikiLink Andamooka,_South_Australia.
- Opal wikiPageWikiLink Andamooka_Opal.
- Opal wikiPageWikiLink Anne_of_Geierstein.
- Opal wikiPageWikiLink Australia.
- Opal wikiPageWikiLink Band_gap.
- Opal wikiPageWikiLink Basalt.
- Opal wikiPageWikiLink Base_(chemistry).
- Opal wikiPageWikiLink Bay_leaf.
- Opal wikiPageWikiLink Bentonite.
- Opal wikiPageWikiLink Birthstone.
- Opal wikiPageWikiLink Bosphorus.
- Opal wikiPageWikiLink Braggs_law.
- Opal wikiPageWikiLink Cabochon.
- Opal wikiPageWikiLink Category:Emblems_of_South_Australia.
- Opal wikiPageWikiLink Category:Hydrates.
- Opal wikiPageWikiLink Category:National_symbols_of_Australia.
- Opal wikiPageWikiLink Category:Opals.
- Opal wikiPageWikiLink Close-packing_of_equal_spheres.
- Opal wikiPageWikiLink Conchoidal_fracture.
- Opal wikiPageWikiLink Coober_Pedy.
- Opal wikiPageWikiLink Cristobalite.
- Opal wikiPageWikiLink Cryptocrystalline.
- Opal wikiPageWikiLink Crystal_structure.
- Opal wikiPageWikiLink Diagenesis.
- Opal wikiPageWikiLink Diatom.
- Opal wikiPageWikiLink Diatomaceous_earth.
- Opal wikiPageWikiLink Diffraction.
- Opal wikiPageWikiLink Diffraction_grating.
- Opal wikiPageWikiLink Elizabeth_II.
- Opal wikiPageWikiLink Erandique.
- Opal wikiPageWikiLink Ethiopia.
- Opal wikiPageWikiLink Evil_eye.
- Opal wikiPageWikiLink File:Alphacrist.png.
- Opal wikiPageWikiLink File:Opal_from_Yowah,_Queensland,_Australia_2.jpg.
- Opal wikiPageWikiLink Flame_Queen_Opal.
- Opal wikiPageWikiLink Fluorescence.
- Opal wikiPageWikiLink Foil_opals.
- Opal wikiPageWikiLink Galaxy_opal.
- Opal wikiPageWikiLink Gemstone.
- Opal wikiPageWikiLink Georgius_Agricola.
- Opal wikiPageWikiLink Geyser.
- Opal wikiPageWikiLink Geyserite.
- Opal wikiPageWikiLink Grand_Central_Terminal.
- Opal wikiPageWikiLink Halleys_Comet_Opal.
- Opal wikiPageWikiLink Holy_water.
- Opal wikiPageWikiLink Hot_spring.
- Opal wikiPageWikiLink Humboldt_County,_Nevada.
- Opal wikiPageWikiLink Humic_acid.
- Opal wikiPageWikiLink Hyalite.
- Opal wikiPageWikiLink Hydrate.
- Opal wikiPageWikiLink Hydrofluoric_acid.
- Opal wikiPageWikiLink Inamori.
- Opal wikiPageWikiLink Infrared_spectroscopy.
- Opal wikiPageWikiLink Interference_(wave_propagation).
- Opal wikiPageWikiLink Iridescence.
- Opal wikiPageWikiLink Ironstone.
- Opal wikiPageWikiLink Isaac_Newton.
- Opal wikiPageWikiLink Joséphine_de_Beauharnais.
- Opal wikiPageWikiLink Jundah,_Queensland.
- Opal wikiPageWikiLink Koroit_opal_field.
- Opal wikiPageWikiLink Kyocera.
- Opal wikiPageWikiLink Libra_(astrology).
- Opal wikiPageWikiLink Light.
- Opal wikiPageWikiLink Lightning_Ridge,_New_South_Wales.
- Opal wikiPageWikiLink Limonite.
- Opal wikiPageWikiLink Lussatine.
- Opal wikiPageWikiLink Marl.
- Opal wikiPageWikiLink Mars.
- Opal wikiPageWikiLink Menilite.
- Opal wikiPageWikiLink Methanol.
- Opal wikiPageWikiLink Milk.
- Opal wikiPageWikiLink Mineral.
- Opal wikiPageWikiLink Mineraloid.
- Opal wikiPageWikiLink Mintabie,_South_Australia.
- Opal wikiPageWikiLink Miocene.
- Opal wikiPageWikiLink NASA.
- Opal wikiPageWikiLink Nanometre.
- Opal wikiPageWikiLink Napoleon.
- Opal wikiPageWikiLink Nevada.
- Opal wikiPageWikiLink New_South_Wales.
- Opal wikiPageWikiLink Olympic_Australis.
- Opal wikiPageWikiLink Opal.
- Opal wikiPageWikiLink Opalescence.
- Opal wikiPageWikiLink Opalite.
- Opal wikiPageWikiLink Ops.
- Opal wikiPageWikiLink Optical_phenomena.
- Opal wikiPageWikiLink Oregon.
- Opal wikiPageWikiLink Pedro_II,_Piauí.
- Opal wikiPageWikiLink Photonic_crystal.