Blue Aventurine Rosary Bracelet Crucifix - Miraculous Medal:Antique Gold The Quartz family is a

The Quartz family is a silicon dioxide

The chatoyancy of the stone is caused by altered amphibole (an inosilicate) fibers that have over time become limonite

hence the name “bloodstone

and mauve come together to create a wonderful Jasper variety

Agate is a variety of chalcedony

Blue Aventurine Rosary Bracelet Crucifix - Miraculous Medal:Antique Gold The Quartz family is aAventurine is a form of quartz, characterized by its translucency and the presence of platy mineral inclusions that give a shimmering or glistening effect. This shimmering effect is called aventurescence. Chrome bearing fuchsite (a variety of muscovite mica) is the classic inclusion, and gives a silvery green or blue sheen. These blue aventurine beads course and it ranges from a light blue through to a quite strong blue color.