Aquamarine 10mm Round A Grade Beads - 15-16 Inch 6X8 Rhyolite is a volcanic

Rhyolite is a volcanic

is often mistaken for turquoise due to its rich blues and blue to greens

It was popular with the Greeks and Romans

they appear dark or black

Turquoise is one of the oldest known gemstones

Aquamarine 10mm Round A Grade Beads - 15-16 Inch 6X8 Rhyolite is a volcanicAquamarine 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.