Gemstone is a precious or semi-precious stone which helps to change the behavior. It is also referred as gem, ratna, crystal stone. Gemstone is the one of the prettiest and beautiful product by nature.
With the right awareness and guidance only, the gems should be worn else it may give the negative effect. The gemstone is given as per the horoscope and helps to overcome the obstacles in your chart.Gems are classified in to two types : Hot And Cold. Ruby, Red coral, Diamond and Cat's eye are Hot gems whereas Pearl, Topaz, Blue Sapphire and Gomed are Cold in nature.
There are nine planets taken into consideration for the astrology and such stones for nine planets is called as Nav-Ratnas
The gemstones are Ruby (Manik), Pearl (Moti), Red Coral (Moonga), Emerald (Panna), Yellow Sapphire, Diamond (Heera), Blue Sapphire (Neelam), Gomedha, Cat's Eye (Lahsunia)
The gemstones Garnet, Amethyst, Aquamarine, Diamond, Emerald, Pearl, Ruby, Peridot, Sapphire, Opal, Yellow topaz, Turquoise.