Citrine Sterling Silver EarringsRectangular citrine in sterling silvera clean geometric cut that lets the stones amber do the work. Citrine is silicon dioxide colored by ferric iron in the crystal lattice, its warmth deepening from pale lemon through amber depending on geological conditions. These earrings feature rectangular cut stones set in solid . 925 sterling silver; the straight edged cut catches light at clean angles rather than the scattered sparkle of a round brilliant,