corundum, ruby, sapphire, nomenclature, color.4, gems

Among the myriad problems facing the colored gemstone industry today is the question of pink sapphire and ruby – where and how do we draw the line between them? Over the past 10–20 years gemologists and gem dealers have struggled with this question, but a solution acceptable to the majority of the trade has yet to be found. With this in mind, we at AIGS would like to send our solution up the proverbial flag pole, hoping that you, the trade, will salute.