Diamond dilemma
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Diamond Dilemma . Activity 13. Read B-7 Copy this challenge question: Which three properties are most useful when identifying an unknown material. Explain why for each. Copy the vocab: Crystal shape : The general shape of a sample of a mineral (called “crystal habit” by mineralogist).

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Diamond Dilemma

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Diamond dilemma

Diamond Dilemma

Activity 13


Diamond dilemma

  • Read B-7

  • Copy this challenge question: Which three properties are most useful when identifying an unknown material. Explain why for each.

  • Copy the vocab:

    Crystal shape: The general shape of a sample of a mineral (called “crystal habit” by mineralogist).

    Luster: The ability of a material to reflect light (“shininess”).

    Property: The nature of a material, such as color, hardness, state, density, luster, etc.

    Transparent: Ability to let all light pass through an object creating a “clear” appearance (glass).

    Translucent: Ability to let some light pass through an object creating a “blurred” appearance (stained glass).

    Opaque: Does not allow any light to pass through (wood).

  • Glue in student sheet 13.1.

  • Discuss the following with your partner:

    • What is a diamond?

    • Where do diamonds come from?

    • What else could the earring be made of?

    • How could you find out if the earrings contain genuine diamonds?

  • Complete the procedure.


Diamond dilemma

  • Discuss the following:

    • Imagine conducting the same tests on lots of different materials, such as metals, plastics, and glass. Would you expect to get similar results for the different materials? Why or why not?

    • Imagine conducting the same tests on lots of different samples of one type of material (like iron). Would you expect to get the same results from the different samples? Why or why not?

  • Complete the procedure.

  • Answer:

    • Analysis 1 and 2 (#2 share with one table nearby)

    • Vocab

    • Challenge Question

    • Student Sheet 13.1


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