La andesina es un miembro del grupo plagioclasa feldespato que también incluye la labradorita y la piedra de sol. Todos los miembros de este grupo son una mezcla de albita y anortita, siendo la andesina un 50-70% albita y un 30-50% anortita.
Los suministros de andesina del Congo son bastante recientes, encontrándose el mineral en una variedad de colores, incluyendo rojo, amarillo, champán y verde. Tiene una dureza de 6.5 en la escala Mohs por lo que que no es ideal para anillos.
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Calificación General -> 10
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