Formula:(Fe,Mg,Zn)2Al9Si4O23(OH)
Class:Silicates
Crystal system:Monoclinic
Hardness:7.00-7.50
Specific gravity:3.70-3.80
Locality:Russia
Dimensions (L x W x H):58 x 50.0 x 25.00 mm
Weight:75 g
Natural specimens may vary slightly from the listed measurements.
Staurolite is a silicate mineral famous for forming distinctive penetration twins, often in the shape of crosses. These natural crystal crosses, called “Fairy Crosses”, are admired worldwide for their rarity and symbolism.
This specimen from Keivy Massif (Kola Peninsula, Russia) shows a well-defined cross-shaped twin in a light matrix. Such specimens are highly sought after not only for their mineralogical uniqueness but also for their cultural and metaphysical associations with protection and good fortune.
- Chemical formula: Fe²⁺₂Al₉Si₄O₂₃(OH)
- Crystal system: Monoclinic
- Twin law: Penetration twins at ~90° or 60°
- Locality: Keivy Massif, Kola Peninsula, Russia
*The price is approximate and may vary depending on availability and shipping. Please contact us to confirm.