Rock IdentifierRose, Smoky & Citrine Quartz
Key takeaways
- Rose quartz is pink and usually massive; fine crystals are rare and prized.
- Smoky quartz gets its grey-brown color from natural irradiation of aluminum traces.
- Most 'citrine' on the market is heat-treated amethyst, not natural citrine.
Rose quartz
Rose quartz is the soft pink to rosy variety, colored by trace titanium, iron, or microscopic mineral fibers (which can give it a faint star). It almost always occurs as massive, cloudy chunks rather than crystals — well-formed rose quartz points are genuinely rare and command a premium. Its pink can fade in strong sunlight.
Smoky quartz
Smoky quartz ranges from pale grey to near-black brown, its color created when natural radiation acts on tiny amounts of aluminum in the crystal. It's transparent to translucent, with the usual quartz hardness and points. Very dark, deliberately irradiated stones are sold as 'morion'; heavy, even blackness can indicate lab irradiation.
Citrine — the tricky one
Natural citrine is a pale yellow to golden quartz colored by iron, and it is fairly uncommon. Most citrine in shops is heat-treated amethyst, recognizable by a reddish or burnt-orange tint and a whitish base where the purple used to be. Natural citrine tends toward a subtler lemon-to-honey yellow. Neither is 'fake' — but the distinction affects value and honesty in labeling.
Telling them apart
All three are quartz, so they share hardness 7, glassy luster, and conchoidal fracture — color is the divider. Confirm quartz first (scratches glass, no cleavage), then judge by hue. For citrine specifically, look for the concentrated orange-brown 'ovenbaked' color and pale base that betray heat treatment.
