Boucles d'oreilles PrénitePrehnite is a calcium and aluminum silicate that forms in the cracks of volcanic and metamorphic rocks, often in association with basalts and gabbros. Its orthorhombic crystal structure gives it a beautiful translucency and hues ranging from soft green to pale yellow, sometimes marbled with pearly reflections. The stone is surrounded by 925 silver Stone size: 1 cm x 0,6 cm The photo actually represents the jewelry you will receive Lithitherapy: Known