Ass # 1 - Precious Metals & Manufacturing
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Ass # 1 - Precious Metals & Manufacturing

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Questions and Answers

Which metal is NOT commonly used in platinum alloys to increase hardness?

  • Copper
  • Ruthenium
  • Aluminum (correct)
  • Iridium
  • What is a key characteristic that distinguishes palladium from platinum?

  • Palladium has a gold color.
  • Palladium tarnishes more easily than platinum.
  • Palladium is less expensive than platinum. (correct)
  • Palladium is denser than platinum.
  • Which type of gold has an increased amount of copper?

  • White Gold
  • 14k Yellow Gold
  • Rose Gold (correct)
  • Green Gold
  • Sterling silver is defined as which proportions of silver and copper?

    <p>925 parts silver and 75 parts copper</p> Signup and view all the answers

    What is the primary disadvantage of pure silver for jewelry use?

    <p>It is too soft.</p> Signup and view all the answers

    Which of these materials is primarily used in modern vermeil plating?

    <p>Gold</p> Signup and view all the answers

    What reaction occurs when silver is exposed to sulfur in the air?

    <p>It tarnishes.</p> Signup and view all the answers

    Which alloy is characterized as consisting of 900 or 950 parts platinum?

    <p>Platinum alloy</p> Signup and view all the answers

    What is the primary benefit of tungsten carbide rings in jewelry?

    <p>They retain a permanent polish.</p> Signup and view all the answers

    Which characteristic is true about pure titanium?

    <p>It is highly resistant to scratching.</p> Signup and view all the answers

    How is niobium typically joined when making jewelry pieces?

    <p>With rivets or tiny screws.</p> Signup and view all the answers

    What process can be used to produce brilliant colors on titanium and niobium?

    <p>Anodizing.</p> Signup and view all the answers

    Which statement is true regarding tungsten metal in jewelry?

    <p>It is blended with cobalt to form tungsten carbide.</p> Signup and view all the answers

    What is a unique feature of stainless steel compared to other metals discussed?

    <p>Corrosion resistance due to Chromium</p> Signup and view all the answers

    Which of the following materials is most comparable in density to silver?

    <p>Niobium</p> Signup and view all the answers

    What adds to the durability and scratch resistance of alloyed titanium?

    <p>Aluminum and vanadium.</p> Signup and view all the answers

    Which of the following metals is considered a precious metal?

    <p>Platinum</p> Signup and view all the answers

    What is metal memory?

    <p>The tendency of a metal to return to its previous shape after being bent</p> Signup and view all the answers

    Which metal has the highest luster when polished?

    <p>Silver</p> Signup and view all the answers

    What does a fineness rating of 750 indicate about a precious metal?

    <p>It is 75 percent pure</p> Signup and view all the answers

    Which precious metal tends to retain its shape when bent, exhibiting the least metal memory?

    <p>Platinum</p> Signup and view all the answers

    What characteristic of precious metals contributes to their allure?

    <p>Their luster and color</p> Signup and view all the answers

    Which of the following statements about base metals is accurate?

    <p>They are non-precious metals like copper and zinc</p> Signup and view all the answers

    How does silver compare to gold and platinum in terms of rarity?

    <p>It is less rare than gold</p> Signup and view all the answers

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