A cover image of the "Rock Mineral and Gem Knowledge Cards" quiz deck by Pomegranate. The cover features a detailed photograph of a clear quartz crystal against a blue background reminiscent of crystalline caves. The bottom shows the Smithsonian Institution's logo.
Here's a two-sided card from Pomegranate's Rock Mineral and Gem Knowledge Cards. The left side features a photo of a rock formation along with the text, "True or false? Sedimentary rocks commonly form as a result of weathering and erosion." The right side states, "True," and provides an in-depth explanation about how weathering and erosion contribute to the formation of sedimentary rocks.
A knowledge card from the Rock Mineral and Gem Knowledge Cards by Pomegranate features information about pearls. On the left side, it asks, "What animals create most of the world’s pearls?" with multiple-choice options: a. Corals, b. Bryozoans, c. Crabs, d. Mollusks. The right side provides an explanation similar to mineral lore, detailing how mollusks form pearls when a foreign object becomes lodged in their shell.
The "Rock Mineral and Gem Knowledge Cards" by Pomegranate feature a trivia card displaying a photograph of a green malachite mineral, enriched with fascinating mineral lore. The question posed on the card reads, "Malachite, a valued ornamental stone, is always green because of the presence of what?" with answer choices: a. Aluminum, b. Copper, c. Iron, d. Calcium. The correct answer (b. Copper) is provided on the back of the card.
A cover image of the "Rock Mineral and Gem Knowledge Cards" quiz deck by Pomegranate. The cover features a detailed photograph of a clear quartz crystal against a blue background reminiscent of crystalline caves. The bottom shows the Smithsonian Institution's logo.
Here's a two-sided card from Pomegranate's Rock Mineral and Gem Knowledge Cards. The left side features a photo of a rock formation along with the text, "True or false? Sedimentary rocks commonly form as a result of weathering and erosion." The right side states, "True," and provides an in-depth explanation about how weathering and erosion contribute to the formation of sedimentary rocks.
A knowledge card from the Rock Mineral and Gem Knowledge Cards by Pomegranate features information about pearls. On the left side, it asks, "What animals create most of the world’s pearls?" with multiple-choice options: a. Corals, b. Bryozoans, c. Crabs, d. Mollusks. The right side provides an explanation similar to mineral lore, detailing how mollusks form pearls when a foreign object becomes lodged in their shell.
The "Rock Mineral and Gem Knowledge Cards" by Pomegranate feature a trivia card displaying a photograph of a green malachite mineral, enriched with fascinating mineral lore. The question posed on the card reads, "Malachite, a valued ornamental stone, is always green because of the presence of what?" with answer choices: a. Aluminum, b. Copper, c. Iron, d. Calcium. The correct answer (b. Copper) is provided on the back of the card.

Rock Mineral and Gem Knowledge Cards

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This quiz deck presents a well-rounded sampling of mineral lore in a Q&A format, with a question—often accompanied by a color photograph—on the front and the answer on the back of each of the 48 cards. Together they offer a fascinating tour of the mineral kingdom, from the legendary Hope Diamond to corals and cultured pearls, dazzling crystalline caves, and the mysterious sarsens of Stonehenge.

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