What are the two common types of inclusions found within gemstones?

Inclusions in gemstones are impurities or foreign materials that can affect the stone's clarity and overall appearance. Two common types of inclusions that are frequently found in gemstones are liquid and gas inclusions.

Liquid inclusions often consist of a liquid substance, typically water or a saline solution, trapped within the gemstone as it crystallizes. These inclusions can vary in size and can significantly impact the visual characteristics of the stone, such as causing a phenomenon known as "liquid-filled" inclusions, where the liquid can create a visual effect or contribute to the gem's unique appearance.

Gas inclusions, on the other hand, consist of gas bubbles that are trapped within the gemstone. Similar to liquid inclusions, gas inclusions can affect the clarity of the stone, causing it to appear cloudy or enhancing its sparkle depending on the arrangement and size of the gas bubbles.

Understanding these types of inclusions is vital for gemologists when assessing the quality and value of a gemstone. Other option choices refer to different characteristics or classifications that do not commonly align with the types of inclusions found in gemstones.