Smoky Citrine double termination point. Light smoky and very clear.
Mine opened in October, 2016 in the amethyst fields of Minas Gerais, Brazil. Analysis revealed the unusual color is due to the citrines growth occurring in a layer of earth where gamma radiation is present. This combined with the heat and pressure created the yellow/green coloration. Further intrusion of oxides during the growth cycle produced the phantoms and smoky patterns within the citrine.
(Group shot provided to show how individual citrine colors vary.) This one is bottom 3 from the left.