![]() ![]() If you notice a fracture that reaches the surface, there are things to do to avoid it from cracking. The heat is so high that some natural inclusions inside the gem (could be other minerals) expand rapidly, more so than the host stone (the ruby or sapphire), causing the host stone to crack because of the high pressure. Ruby and sapphire sometimes are treatment with very high heat. This quartz as you can imagine is prone to cracks and damage. It’s sometimes known as “crackled quartz” in the market. ![]() Some quartz is treated by very high heat, and subsequently dunked into cold water. Extreme Change In Temperature & Humidity red tourmaline and watermelon tourmaline) To describe the clarity of gemstones, gemstone industry has separated different gems into different categories, from type I gemstones usually having the least amount of inclusion/fractures (clean gemstones) to type III gemstones that are usually included. Some gems naturally have more fractures, which can easily lead to cracks. Also, they can develop over time to reach the surface due to wear and tear. However, during impact, the gemstone would crack and break along those fractures. ![]() The small fractures may not even be visible to the eyes. Continuing from the last point, gemstones also have fractures and inclusions that are inducive to cracks.
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