A gemstone is any rock or mineral that could be used for ornamentation or jewelry. Gemstones usually are minerals prized for their color, beauty, rarity, and endurance. Most often, the minerals are cut and polished to bring out the natural beauty of the piece.
The varicella vaccine is a live (attenuated) virus administered to protect against the viral disease commonly known as chickenpox caused by the varicella zoster virus (VZV).he varicella vaccine is marketed as Varivax in the U.S. by Merck and globally as Varilrix by GlaxoSmithKline.
That is why natural infection with varicella virus causes illness, but varicella vaccine virus doesn't. However, because the varicella vaccine virus reproduces itself a little bit, it induces immunity against varicella that is, like the immunity to rubella, measles or mumps virus, likely to be life-long.