Montana Moss Agate 27-37x41-55mm A Grade Large Free Form Cabochon nye_8inch_worst Tourmaline is unusual in that

Tourmaline is unusual in that it is both pyroelectric and piezoelectric

rainbow effect of light refracting off of the air bubbles inside of the stone

Topaz occurs in a wide range of natural colors

bluish green

Montana Moss Agate 27-37x41-55mm A Grade Large Free Form Cabochon nye_8inch_worst Tourmaline is unusual in thatMontana Moss Agate is an unusual Moss Agate in that it exhibits some banding, along with the dendritic inclusions of manganese and iron typical of Moss Agate. It is a transparent to translucent stone that occurs in milky white, gray and rusty oranges and reds with black, white, gray and brown banding and dendritic patterns. Historically, Moss Agate has been considered a crystal of agricultural abundance and used as a healing stone by tribal priests