POLISHED BLUE CALCITE FROM MADAGASCAR (MADAGASCAR)

Blue calcite from Madagascar is a soft, pastel-blue variety of calcite known for its translucent glow, gentle banding, and calming “cloudy sky” appearance. Mined primarily in the limestone-rich regions of Atsimo-Andrefana and Analamanga, this material forms when mineral-rich fluids alter ancient limestone, leaving behind thick veins of vibrant blue calcite. Its soothing color comes from trace mineral inclusions—most notably microscopic copper-bearing particles and subtle structural variations—that scatter light to produce its signature icy blue tones, making it a favorite for polished bowls, spheres, and decorative pieces.