sapphire
Sapphire is the birthstone of September.
Isn't this a gemstone that can be said to be the representative blue gemstone?
However, there are actually many colors, including ``bicolor sapphire'' that exhibits two colors in one stone, ``color change sapphire'' that has a color change effect, and ``star sapphire'' that shows six lines when exposed to light. There are many types such as ``.
It belongs to the same mineral corundum as ruby, and has high Mohs hardness and toughness, making it a gemstone that can be enjoyed as everyday jewelry.
Karatz GemMagazine
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sapphire "
