The large scope of potential global public health threats is recognized in the revised International Health Regulations (IHR [2005])3 with its all-hazards approach to assessing serious public health threats.
How much is it? On average, a high-quality peridot stone can cost anywhere from $50 to $200+ per carat. Larger peridots that are exported from foreign countries can cost as much as $500+ per carat. Generally, stones mined from Burma, Pakistan and Arizona can command the highest prices.
Peridot is a green gem stone, that is actually gem quality Olivine-a magnesium iron silicate mineral with the general chemical formula - (Mg, Fe)2SiO4.Olivine is actually a solid solution series with varying iron and magnesium content where: 100% magnesium, 0% iron = forsterite. 0% magnesium, 100% iron = fayalite.eridot is a green gem stone, that is actually gem quality Olivine-a magnesium iron silicate mineral with the general chemical formula - (Mg, Fe)2SiO4. Olivine is actually a solid solution series with varying iron and magnesium content where: