In modern times some organic gems have been affected by which issues?

• A. Economic recession
• B. Magnetic interference
• C. Ocean currents
• D. Environmental issues

Answer: (D)

Environmental factors influence organic gems because they come from living organisms, so their quality and availability depend on their surrounding habitat. In modern times, pollution, climate change, and ecosystem disruption can directly affect these gems. For pearls, water quality and the health of the oyster populations govern nacre formation and luster; polluted or unstable waters can produce dull or fewer pearls. Coral-based gems rely on healthy reefs, and warming oceans, acidification, or pollution threaten coral growth and color-rich skeletal material, reducing supply and altering appearance. Resin-based gems like amber come from trees, so forest health and disturbances can influence resin production and the preservation of deposits. Altogether, environmental issues impact both the production and the quality of organic gems, making environmental issues the most fitting answer.