Prase
Prase is a chalcedony, a cryptocrystalline form of silica composed of fine intergrowths of the minerals quartz and moganite. It is characterized by its translucent, milky to deep green color. The green hue is typically due to the presence of trace amounts of nickel or chromium. Prase is relatively rare compared to other varieties of chalcedony. It is often found in association with serpentinite rocks.
Historically, prase has been used as an ornamental stone. Its attractive green color made it suitable for
In modern times, prase is collected by mineral enthusiasts and gemologists. It is not a widely used