Aquamarine 10mm Faceted Energy Prism - 15-16 Inch Stone Type_Boulder Opal and it is also known

and it is also known as Toog

When tumbled it can have the look of polished steel

which comes in many forms and color variations

Each stone is unique in terms of its patterns

Aquamarine 10mm Faceted Energy Prism - 15-16 Inch Stone Type_Boulder Opal and it is also knownAquamarine is a transparent to translucent stone ranging from cerulean blue to light blue in higher grades. In lower grades it can be transparent to opaque and is commonly light blue, green and yellow with white and gray inclusions. The name is the Latin term for water of the sea. Aquamarine was once thought to be the treasure of mermaids, as well as a lucky stone for sailors.