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    Category: Gem or Scam? Library

    Wonderstone (jasper)

    Commercial name for most likely a banded sandstone derived from several sites in the United States. Kanab Wonderstone from Kanab, Utah and Sedona Wonderstone (also…

    rolf
    rolf 31 August 2025
    0 Comments

    Stargate (Star Gate) Calcite

    Commercial name for a specific calcite crystal growth form (habit), namely so-called dogtooth calcite. The mineralogical designation for such a crystal is a scalenohedron.

    rolf
    rolf 26 August 2025
    0 Comments

    Snake jasper

    Commercial name for a yellowish-brown to brownish-red rock from the Indian Himalayas with light brown lines and arches. The curved lines are cross sections of…

    rolf
    rolf 26 August 2025
    0 Comments

    Spider web carnelian / Carnelian Fire Agate

    Commercial name for carnelian that has been heated to produce a crackle effect (spider web). Also marketed under the name Carnelian Fire Agate or Crab…

    rolf
    rolf 26 August 2025
    0 Comments

    Porcupine quartz

    Commercial fantasy name used as a synonym for cactus quartz. Named for the similar orientation of a porcupine’s spines. Learn more about quartz growthforms? Take…

    rolf
    rolf 26 August 2025
    0 Comments

    Snakeskin agate

    Commercial name used for various stones. There is a brown, gray or cream colored chalcedony or agate on the market in which the white outer…

    rolf
    rolf 26 August 2025
    0 Comments
    t - tangerine kwarts

    Tangerine quartz / Tangerine Lemurian

    Unregistered commercial name for orange (pink) quartz, usually from Brazil or Madagascar. The color is caused by inclusions or a natural coating of hematite or…

    rolf
    rolf 28 August 2025
    0 Comments

    Tanzurineâ„¢ (Cherry and Emerald)

    Commercially registered trademark for quartz(ite) with inclusions from Tanzania, in red (Cherry Tanzurineâ„¢) and green (Emerald Tanzurineâ„¢). This “new find” was first offered at the…

    rolf
    rolf 28 August 2025
    0 Comments
    z - zebradoriet schriftgraniet

    Feldspar Zebra / Zebradorite

    Commercial name for a rock composed of intergrown light-colored potassium feldspar and dark quartz, often referred to geologically as graphic granite. The angular intergrowth is…

    rolf
    rolf 31 August 2025
    0 Comments
    t - terahertz stone - silicium

    Terahertz stone

    Commercial fantasy name and trade term for a man-made product with an appearance similar to hematite or magnetite, especially in polished form. Said to be…

    rolf
    rolf 28 August 2025
    0 Comments
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