$50.00
A 3.25-inch natural black amethyst cluster from Brazil with deep violet-to-charcoal quartz points speckles of cacoxenite set in a basalt base for upright display in home or office.
In stock
This 3.25-inch natural black amethyst cluster is shaped with a cut and polished base that allows the piece to stand securely while showcasing the crystal face. Brazilian cutters highlight the quartz’s darker tones—ranging from smoky purple to nearly black—by orienting the exposed points toward the viewer.
The surface reveals densely packed crystals with subtle internal zoning, darkened by trace mineral inclusions that create the dramatic “black amethyst” appearance.
Black amethyst is a deeper, darker variant of amethyst found in only a few Brazilian deposits. The coloration comes from a combination of:
high concentrations of iron within the quartz lattice
fine hematite or goethite inclusions
natural irradiation deep within volcanic basalt flows
These factors intensify the natural purple of amethyst into saturated plum, smoky violet, or charcoal-toned quartz.
Black amethyst forms inside basalt geodes in the Rio Grande do Sul region, where silica-rich hydrothermal fluids crystallize slowly, building layers of quartz over thousands of years.
| Property | Value |
|---|---|
| Mineral Class | Silicate – Quartz Variety |
| Chemical Formula | SiO₂ with Fe³⁺ and trace inclusions |
| Crystal System | Trigonal |
| Mohs Hardness | 7 |
| Locality | Rio Grande do Sul, Brazil |
| Formation Style | Basalt geode interior with iron-rich zoning |
While traditional purple amethyst has been used for millennia, black amethyst is a relatively modern addition to the mineral market. Its dramatic coloration and rarity within specific Brazilian basalt flows have made it increasingly sought after by collectors.
The cut-base display style originated in Brazil’s geode mining regions to help clusters stand upright, allowing the dark crystals to catch ambient light and reveal their subtle violet undertones.
Traditional crystal lore associates black amethyst with:
Deep focus, linked to its darker coloration and grounding presence
Energetic protection, often used to create a calm or intentional environment
Inner stillness, encouraging reflective or meditative atmospheres
Transformative insight, symbolically tied to the shift from light purple to deep violet
These interpretations reflect long-standing symbolic associations with color and quartz structure.
At 3.25 inches, this cluster offers strong visual contrast between the dark crystal points and the lighter basalt base. The densely grown terminations create texture and depth, while the polished underside provides a stable, finished presentation. Each cluster is naturally unique in tone and crystal arrangement.
Dust with a soft cloth. Avoid harsh chemicals. Keep out of prolonged direct sunlight to maintain depth of color. Handle gently around crystal tips.
| Weight | 11 oz |
|---|---|
| Dimensions | 1.75 × .75 × 3.25 in |
