AS PEDRAS
Mineralogical Guide: The Beauty of Natural Stones

Looking for unique and high-quality jewelry, created with love and passion? AS PEDRAS, a family-run jewelry store located in Saint-Malo, is the ideal place to discover unique pieces adorned with magnificent fine and precious colored stones. Founded in 1985, this family-run business prides itself on upholding traditional values ​​and fostering a close, trusting relationship with its customers. While online sales are not available, AS PEDRAS prioritizes a personal approach by o

Vivianite: The Rare Mineral with Deep Green Hues Vivianite is a rare mineral from the iron phosphate family, prized for its crystals with intense green hues that evolve into a spectacular deep blue. Both a collector's item and a geological curiosity, vivianite captivates mineral enthusiasts with its unique aesthetic and its natural evolution over time. How is Vivianite formed? Vivianite is a secondary mineral: it forms during the natural transformation of other minerals rich

What is petrified wood? Petrified wood: a natural stone formed from the fossilization of wood Petrified wood, also called fossilized wood, is a natural stone dating back hundreds of thousands, or even millions, of years. It is an ancient tree whose cells have been progressively replaced by minerals, primarily silica, over time. This mineralization process occurs when dead wood is rapidly buried under mineral-rich sediments. This process is often linked to volcanic eruptions o