1.
How many karats is pure gold?
Correct Answer
C. 24
Explanation
Pure gold is measured in karats, which is a unit used to indicate the purity of gold. The highest possible karat value for gold is 24. Therefore, the correct answer is 24, as it represents the maximum karat value for pure gold.
2.
Which precious stone's name comes from the Latin for "water" and "sea"?
Correct Answer
C. Aquamarine
Explanation
Aquamarine is the correct answer because its name is derived from the Latin words "aqua" meaning water and "marina" meaning sea. This is because the stone's color resembles the beautiful blue shades of the ocean, making it a fitting name. Lapis Lazuli, Tanzanite, and Amber do not have names that relate to water or sea in Latin.
3.
What is the modern birthstone for the month of March?
Correct Answer
B. Aquamarine
Explanation
Aquamarine is the modern birthstone for the month of March. It is a gemstone that is typically light blue or greenish-blue in color, resembling the color of the sea. The name "aquamarine" is derived from the Latin words for water and sea. This gemstone is believed to symbolize youth, hope, and fidelity. It is often associated with calming and soothing qualities, making it a popular choice for jewelry. Aquamarine's connection to the month of March makes it a meaningful and appropriate birthstone for individuals born during that time.
4.
Which unit is used to measure the purity of gold?
Correct Answer
D. Karat
Explanation
Karat is the correct answer because it is the unit used to measure the purity of gold. The higher the karat, the purer the gold. Karat is represented by a number followed by the letter "K" or "kt", with 24 karat being pure gold. This unit is commonly used in jewelry to indicate the gold content and quality of the piece. Hundredweight, gram, and ounces are not used specifically to measure the purity of gold.
5.
Which color is the amethyst birthstone?
Correct Answer
A. Purple
Explanation
Amethyst is a type of quartz gemstone that is typically purple in color. It is widely recognized as the birthstone for the month of February. The color purple is associated with qualities such as royalty, spirituality, and inner peace, making it a fitting choice for a birthstone. Its vibrant and rich hue adds to its popularity in jewelry and decorative pieces.
6.
What is the color of a ruby?
Correct Answer
C. Red
Explanation
Rubies are known for their vibrant red color, which is why the correct answer is red. Rubies are a variety of the mineral corundum, and their red color is caused by the presence of chromium. This deep red hue is highly prized and is often associated with love, passion, and power. Rubies are considered one of the most valuable gemstones, and their red color is a defining characteristic.
7.
What did Harry Winston donate to the U.S. National Museum of Natural History in 1958?
Correct Answer
B. The Hope Diamond
Explanation
In 1958, Harry Winston donated the Hope Diamond to the U.S. National Museum of Natural History.
8.
What percent of pure gold would you find in 18-carat gold?
Correct Answer
B. 75%
Explanation
18-carat gold is a type of gold alloy that contains 75% pure gold. Carat is a unit used to measure the purity of gold, with 24-carat gold being 100% pure. Therefore, in 18-carat gold, 75% of the alloy is made up of pure gold.
9.
Which gemstone played a large role in the film "Jurassic Park"?
Correct Answer
C. Amber
Explanation
Amber is the correct answer because it played a large role in the film "Jurassic Park". In the movie, scientists extract dinosaur DNA from mosquitoes preserved in amber, which ultimately leads to the creation of the dinosaurs in the park. Amber is known for preserving ancient organisms and is often associated with fossils, making it a fitting gemstone for the film's theme of resurrecting prehistoric creatures.
10.
Which gem is considered the modern birthstone for February?
Correct Answer
C. Amethyst
Explanation
Amethyst is considered the modern birthstone for February because it has been associated with this month for centuries. It is a purple variety of quartz that symbolizes wisdom, spirituality, and clarity of mind. The deep purple color of amethyst is believed to promote calmness and inner strength, making it a fitting gemstone for those born in February. Additionally, amethyst is highly valued for its beauty and is often used in jewelry and decorative pieces.
11.
Garnet is actually the group name for a family of gemstones that come in every color except what?
Correct Answer
B. Blue
Explanation
Garnet is a group name for a family of gemstones that come in various colors, including yellow, green, and red. However, blue is not one of the colors that garnets naturally occur in. Therefore, the correct answer is blue.
12.
What is the color of the most valuable lapis lazuli stones?
Correct Answer
D. Blue
Explanation
Lapis lazuli is a deep blue gemstone that is highly valued for its intense blue color. The color of lapis lazuli is primarily blue due to the presence of the mineral lazurite, which gives it its distinctive hue. While lapis lazuli can exhibit variations in color, ranging from light to dark blue, the most valuable stones are those with a rich, vibrant blue color. Therefore, blue is the correct answer as it accurately reflects the color of the most valuable lapis lazuli stones.
13.
Which is the measure of diamond weight?
Correct Answer
D. Carat
Explanation
Carat is the correct answer because it is the standard unit of measurement for the weight of diamonds and other gemstones. It is equal to 200 milligrams or 0.2 grams. Carat weight is an important factor in determining the value and size of a diamond, with larger carat weights typically indicating a larger and more valuable stone.
14.
What are the "C's" used to assess the cost of a diamond?
Correct Answer
A. Carat Weight, Cut, Color, Clarity
Explanation
The "C's" used to assess the cost of a diamond are Carat Weight, Cut, Color, and Clarity. These factors are commonly used in the diamond industry to determine the quality and value of a diamond. Carat weight refers to the size or weight of the diamond, cut refers to the quality of the diamond's proportions and facets, color refers to the presence of any color in the diamond, and clarity refers to the presence of any internal or external flaws in the diamond. These factors help determine the overall beauty and rarity of a diamond, therefore affecting its cost.
15.
A diamond is a pure, crystallized form of which chemical element?
Correct Answer
D. Carbon
Explanation
A diamond is a pure, crystallized form of carbon. Carbon atoms bond together in a unique way to form a crystal lattice structure, resulting in the formation of a diamond. Diamonds are known for their hardness and brilliance, making them highly valued gemstones.
16.
Which of these is not one of the "four Cs" that determine a diamond's value?
Correct Answer
B. Clear
Explanation
The term "clear" in this context is not one of the "four Cs" that determine a diamond's value. The four Cs are Color, Clarity, Cut, and Carat Weight. "Clear" is not a recognized factor in assessing a diamond's value, as it does not specifically refer to any characteristic or quality of the diamond.