Minerals, Rio Grande do Sul, Brazil
Amethyst
Quartz var. amethyst
Over two hundred crystals with golden goethite inclusions.
Price on request · In stock — Gimenei shopping centre
- Epoch
- Cretaceous period
- Age
- ≈ 130 Mya
- Origin
- Rio Grande do Sul, Brazil
- Size
- 51 × 35 × 20 cm
- Weight
- 32.2 kg
- Classification
- Oxides, quartz
- Composition
- Silicon dioxide SiO₂ with goethite inclusions
- Ref.
- R–0257
A natural amethyst druse of more than two hundred crystals on matrix. Almost every crystal is threaded with the finest golden-russet goethite inclusions.
Rio Grande do Sul is the historic centre of Brazilian mineralogy; the region supplies amethysts of world standard.