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.
To locate the price for a 0.34 carat H VS2, first select the 0.30 to 0.39 size matrix. Find the H row and then locate the VS2 column. The number is 18, or $1,800 per carat. The stone's price is 0.34 x $1,800 or $612 for the stone. Similarly, the price for a 0.39 K VS1 is 13 or $1,300 per carat, or $507 per stone.