Quartz-Veined Basalt River Stone

Hardness: 6-7 (Mohs scale), Color: Dark grey to charcoal matrix with a white/opaque band, Luster: Dull to waxy (smooth from water erosion), Structure: Fine-grained aphanitic matrix

Formed from rapid cooling of magnesium-rich and iron-rich lava. The white stripe is a vein created when mineral-rich hydrothermal fluids filled a fracture in the host rock and crystallized over geological time.

Commonly used as decorative landscaping stones, aquarium decor, pocket stones, or for artisanal stone carving.

These are often called 'Wishing Stones' in folklore; a single continuous white line encircling the rock is said to bring good luck. The contrast between the dark basalt and white quartz is due to the different cooling rates and chemical compositions of the materials.

Identified by the distinct white crystalline band cutting through a dark, dense matrix. Frequently found on beaches and in riverbeds where water has naturally tumbled and polished the specimen.