The coral gemstone is an organic gemstone. It is not extremely durable or hard to withstand regular usage. It ranks 3 to 4 on the Mohs scale of hardness. It is available in a range of colors. This is the finest quality of red coral as it is formed through natural phenomena. The brilliant red color, brightness, and astrological properties of this stone set it apart from its other variants. There is no denying the fact that a heat-treated coral stone is different from a synthetic stone, but still, it does affect the properties of the stone and thus, its value is lesser than the real gemstone. https://bluesapphireorgin.blogspot.com/2023/02/difference-between-natural-and-heated.html