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    What People Are Saying

    It worked like it should
  • Cecilia
  • 11/26/2014
  • I purchased several of these because my cub scouts were working on thier geologist activity badge, belt loop and pin. They had to test rocks and minerals to see if it would scratch glass. The boys enjoyed doing the experiment and the glass plates worked perfectly. I was worried that the boys would cut themselves so I made sure that they laid them flat on the table before trying to scratch them with a rock.

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    Plate, glass, 2x2"

    Ages 8+

    Item# RM-STREAKG

    $1.25 in_stock

    In Stock

    Order now to ship Tomorrow. Express shipping is available.
    Product Overview
    Handy for testing hardness of minerals.

    Quantity Pricing

    Save big when you purchase at the quantity levels shown below!

    QUANTITY 1 - 9 10+
    PRICE $1.25 $1.15
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    • Product Details

      Plate, glass, 2x2"

      Handy for testing hardness of minerals.

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