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Emerald (มรกต)

In Egyptian history, it was believed that emeralds can bring immortality and was buried alongside the Pharaoh. Emerald is categorized in the Beryl or Beryllium group which contains Beryllium Aluminum Silicate. Emerald naturally found in hexagon shape with green color. Its hardness approximately reaches 7.5 to 8 in Moh’s scale. Due to its hardness that

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Ruby (ทับทิม)

Throughout the history of jewelry and gemstone, Ruby inevitably play a major role in the industry Ruby, the king of the red gemstones, the most precious one Ruby, also known as “the King of the red gemstones” is categorized within corundum. It has level 9 of the Mohs scale hardness which is only outshined by

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