Larimar 6-12mm Graduated Rondelle with Matrix - 15-16 Inch birthstone_aquamarine it is a form of

it is a form of hydrated amorphous silica

Agate has been prized for its beauty throughout history

orthorhombic crystals or in massive form

chrysocolla

Pietersite is composed of

Larimar 6-12mm Graduated Rondelle with Matrix - 15-16 Inch birthstone_aquamarine it is a form ofLarimar is a translucent blue, turquoise and white stone that can have streaks and patterns of white, as well as red or brown either from oxidation or Hematite inclusions. It is a rare variety of Pectolite, found only in the Dominican Republic. Copper within the Pectolite creates the beautiful blue and turquoise colors in the stone. The blue colors are photosensitive and may fade when exposed to excessive light or heat.