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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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).