Gemstones are one of the most beautiful and valuable materials found on earth. They have captivated the attention of humans for centuries and have been used in various forms of jewelry and decorative objects. While gemstones are known for their beauty and clarity, they are not always perfect. In fact, many gemstones have inclusions, which can affect their clarity, transparency, and value. In this blog post, we will explore gemstone inclusions, their types, their impact, and how to identify them.

What are Gemstone Inclusions?

Inclusions are imperfections or foreign materials that are trapped inside gemstones during their formation. They can be in the form of liquids, gases, or solids. Liquid inclusions are also known as "enhydros" and occur when water is trapped inside a gemstone. Solid inclusions can be crystals or minerals that are different from the host gemstone. Gas inclusions can be bubbles or voids.

How do inclusions form in gemstones? When a gemstone is formed, it undergoes a process of crystallization from a liquid or a gas. During this process, inclusions can become trapped inside the growing crystal. Inclusions can also form due to the presence of other minerals, which can be incorporated into the gemstone.

The Impact of Inclusions on Gemstones

Inclusions can have a significant impact on the clarity and transparency of gemstones. Large inclusions can make a gemstone appear cloudy, and opaque, or even lower its overall value. However, some inclusions are desirable and can add to the unique character of a gemstone. For example, certain types of inclusions can give emeralds a distinct appearance, known as "jardin."

Inclusions can also affect the durability of a gemstone. If a gemstone has too many or too large inclusions, it can weaken the structure of the gemstone and make it more prone to breaking or cracking.

The Differences between internal inclusions and external ones (blemishes)

Gemstone inclusions can be classified into two main categories: internal inclusions and external blemishes. While both types of imperfections can affect the appearance and value of a gemstone, they differ in their location and how they are formed.

Internal inclusions are imperfections that are trapped inside the gemstone during its formation. They can be in the form of liquids, gases, or solids, and can range in size from microscopic to visible to the naked eye. Internal inclusions are often caused by the presence of other minerals or gases during the crystal growth process. Some common types of internal inclusions include needles, crystals, clouds, feathers, and pinpoints.

External blemishes, on the other hand, are imperfections that occur on the surface of the gemstone. They can be caused by natural processes, such as scratches or abrasions, or by human handlings, such as cuts or chips. External blemishes can also be the result of treatments or enhancements that are applied to the gemstone, such as fillings or coatings. Some common types of external blemishes include scratches, nicks, chips, and pits.

While both internal inclusions and external blemishes can affect the appearance and value of a gemstone, internal inclusions are generally considered to have a greater impact. This is because internal inclusions can affect the transparency and clarity of a gemstone, which are important factors in determining its value. In some cases, internal inclusions can also weaken the structure of a gemstone and make it more prone to breaking or cracking.

External blemishes, on the other hand, are often easier to remove or conceal through polishing or other treatments. However, excessive or severe blemishes can still have a negative impact on the value and appearance of a gemstone.

When evaluating gemstones, it is important to consider both internal inclusions and external blemishes. A gemstone with few or no inclusions or blemishes will generally be more valuable and desirable than one with significant imperfections. However, in some cases, certain types of inclusions or blemishes can add to the character and uniqueness of a gemstone, making it more valuable to collectors or enthusiasts.

Common Types of Inclusions in Gemstones

There are many different types of inclusions that can be found in gemstones. Some of the most common types include:

• Needles: Long, thin inclusions that can resemble needles or fibers.

• Crystals: Solid inclusions that can be crystals of a different mineral than the host gemstone.

• Clouds: Clusters of tiny gas bubbles that can make a gemstone appear cloudy.

• Feathers: Cracks or fractures within the gemstone that can resemble feathers.

• Pinpoints: Tiny dots that can be solid or liquid inclusions.

How to Identify Gemstone Inclusions

Identifying inclusions in gemstones can be challenging, especially if they are small or subtle. The best way to identify inclusions is to examine the gemstone under magnification. A jeweler's loupe or a microscope can be used to view the gemstone in detail. Proper lighting is also important for identifying inclusions. Gemstones should be viewed under bright, even lighting to make inclusions easier to see.

When buying gemstones, it is important to evaluate the presence and impact of inclusions. Inclusions can affect the value and durability of a gemstone, so it is important to choose a gemstone with inclusions that are acceptable for the intended use.

Conclusion

In conclusion, gemstone inclusions are a natural part of the gemstone formation process. Inclusions can have both positive and negative effects on the appearance and value of a gemstone. Identifying inclusions can be challenging, but proper magnification and lighting can make the process easier. When buying gemstones, it is important to consider the presence and impact of inclusions to ensure the best value and durability.