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  2. Heliotrope (mineral) - Wikipedia

    en.wikipedia.org/wiki/Heliotrope_(mineral)

    A rough specimen of bloodstone. Heliotropes (from Ancient Greek ἥλιος (hḗlios) 'sun' and τρέπειν (trépein) 'to turn') (also called ematille, Indian bloodstones, or simply bloodstones) are aggregate minerals, and cryptocrystalline mixture of quartz that occurs mostly as jasper or sometimes as chalcedony (translucent).

  3. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    Actinolite. Nephrite (var.); Adamite; Aegirine; Afghanite; Agrellite; Algodonite; Alunite; Amblygonite; Analcime; Anatase; Andalusite. Chiastolite; Andesine ...

  4. Petoskey stone - Wikipedia

    en.wikipedia.org/wiki/Petoskey_stone

    A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral, Hexagonaria percarinata. [1] Such stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern (and some in the northeastern) portion of Michigan's lower peninsula.

  5. Gemstones in the Bible - Wikipedia

    en.wikipedia.org/wiki/Gemstones_in_the_Bible

    Gesenius (Thesaurus, p. 1113) translates phnynys (Job, xxviii, 18; Prov., iii, 15; viii, 11; xx, 15; xxxi, 10; Lam., iv, 7) as "red coral". However, pearl has also been interpreted to be the meaning in these passages. The coral referred to in the Bible is the precious coral (corallium rubrum), the formation of which is well known. It is a ...

  6. Orbicular jasper - Wikipedia

    en.wikipedia.org/wiki/Orbicular_jasper

    Orbicular jasper from Madagascar. Orbicular jasper is a variety of jasper which contains variably-colored orbs or spherical inclusions or zones. In highly silicified rhyolite or tuff, quartz and feldspar crystallize in radial aggregates of needle-like crystals which provide the basis or seed for the orbicular structure seen in this kind of jasper. [1]

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  8. Precious coral - Wikipedia

    en.wikipedia.org/wiki/Precious_coral

    Precious coral, or red coral, is the common name given to a genus of marine corals, Corallium. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton , which is used for making jewelry .

  9. Zuni fetishes - Wikipedia

    en.wikipedia.org/wiki/Zuni_fetishes

    Wolf fetish with medicine bundle and heartline carved by Stuart Lasiloo; jet, turquoise, coral, shell heshi; 2" L x 1.25" H x .5" W A grouping of hand-carved Zuni fetish objects by the Zuni artist Erik Lasiloo. Zuni fetishes are small carvings made from primarily stone but also shell, fossils, and other materials by the Zuni people.