Emerald is the astrological gemstone of Mercury or Budh Graha as known in Vedic Literature. Emerald is a mineral gemstone and has hardness of 7.5-8 on the Mohr’s Scale. It has a Specific Gravity of 7.76 and is primarily known for its green luster.It is known as Markata in Sanskrit , Panna in Hindi , Emerald in English and Jamrood in Urdu.
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