Citrine supply is led by Brazil, especially Rio Grande do Sul and Minas Gerais. Much commercial citrine is heat-treated from amethyst or smoky quartz, a standard industry process that moves quartz into the yellow-orange range.
Style Notes
Yellow gold and amethyst have been paired since antiquity: warm metal against cool violet, a contrast that has held across jewelry traditions for centuries. White gold and platinum offer the cooler alternative, letting the stone's purple to read without yellow's warming influence.
Stone Story
Garnet's warm internal brilliance is a function of its refractive index, a property that was functionally significant before artificial lighting standardized gemstone environments. This property explains the stone's prized status across cultures that evaluated gems primarily in candlelight and natural daylight.