who's anyone and watches and jewelry wouldn't miss it for anything. the sapphires emeralds and robi's on show here command top prices on the global market. but they come from mines where working conditions are frequently appalling for both people and the environment exploitation is rife as are child labor and poor safety standards and because there's no way of sort of finding a stone's origin there's no incentive to improve the situation. the gemstone industry urgently needs more transparency and awareness that's growing even within the industry itself. but how to go about proving where a gem comes from geological characteristics are the normal way of determining a stone's country of origin but they can't say which mine it came from.