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.
Stones over one carat may retail for $10,000/ct. while stones between 2.00 and 5.00 carats can fetch over $20,000/ct. Fine large alexandrites above five or six carats are extremely rare and top stones can sell for over $200,000.This section has no relevant content published at this time. 1  See also.2  External links.tones over one carat may retail for $10,000/ct. while stones between 2.00 and 5.00 carats can fetch over $20,000/ct. Fine large alexandrites above five or six carats are extremely rare and top stones can sell for over $200,000. This section has no relevant content published at this time. 1  See also. 2  External links.