Gemstones are formed deep within the Earth’s crust under intense heat and pressure. They are then brought to the surface by volcanic activity or erosion.

There are many types of gemstones, including diamonds, rubies, sapphires, emeralds, amethysts, topaz, garnets, and many more.

The best way to determine if a gemstone is real or fake is to have it evaluated by a professional gemologist. However, some basic tests such as a visual inspection, hardness test, or a specific gravity test can help identify a gemstone.