Description
Origin: Minas Gerais, Brazil
Description: This heated rough citrine is produced by treating natural amethyst or smoky quartz to achieve a bright yellow to orange coloration. In rough form, the crystals retain their original quartz structure, often showing pointed terminations and internal zoning, but with a more vivid and uniform color than most natural citrine. The tones can range from light golden yellow to deeper amber hues, depending on the original material and treatment conditions.
The base material forms in pegmatites—coarse-grained igneous rocks that allow large quartz crystals to grow during the final stages of magma cooling. Iron within the quartz is responsible for the color change when exposed to heat, either naturally or through controlled treatment. In Brazil, this process is commonly applied to abundant amethyst deposits, converting purple quartz into commercially recognized citrine while maintaining the crystal’s natural structure.
Heated citrine is often associated with motivation, energy, and productivity. Its brighter and more saturated color gives it a stronger visual presence, and many people are drawn to it as a stone that represents action, drive, and forward movement.
Chemical Composition: SiO₂ (silicon dioxide), with trace Fe (iron)
Grade: Lapidary
Appearance: Transparent
Cracks: Minimal
Inclusions: Minimal
Approximate Size of 1 pc: 30mm x 15mm x 13mm
Approximate Weight of 1 pc: 5.5g
Rough is rough. We do our best to grade and describe pieces in the lot, but ultimately, they all differ.