What is the Strongest gemstone on Earth?

Some Gemstones are the most precious treasures on earth. People around the world have been appreciative of ancient time, for various reasons. Gemstones have long been known for their perceived healing powers as well. Below the list of some Strongest gems on the Earth.  

• Blue Sapphire: Blue Sapphire or Neelam are the strongest gemstones on Earth according to Astrologer. It's usually a lighter colored blue color. It's also famous for Persian Yakut. Blue Sapphire gemstone is eliminating the negative impact of Saturn. Neelam is a very cold stone. This stone will give you everything that you need possibly expect well-being, prosperity, health, happiness. And it recovers lost money and home. It's getting money, reputation, and fame. It also offers a great deal of strength, endurance, and safety in your life.
• Tanzanite Gemstone: is a beautiful and strongest blue stone zoisite, and so it is called Tanzanite because it is produced only in the small region near Mount Kilimanjaro. Tanzanite heated at extreme temperatures will enhance their blue coloring, and there is a lot of similar stone found in the Market, but when any tanzanite which has not been heated and actually has a good blue color would have a high value.
• Opals gemstone is typically a caramel-white color and is uniquely designed by rainbow-colored additions that represent the light like a gemstone. Black opals gemstone are much rarer and mostly are found as in Lighting Ridge place in Australia. The background color of this gemstone is Darker and the lighter the inclusions are lighter, this color difference helps it to become more precious the gem.
• Amethyst is also known as the 'yogi' gemstones. This gemstone helps develop and hold a deeper moral outlook. It can often be claimed that wear this during meditation time and it produces a greater knowledge of all divine spirituals, that's why many psychologists use these stones.