Diopside 2.5mm Table Cut Cube Bead - 15-16 Inch Blue Opal Porcelain Agate is a natural

Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue color and pattern that resembles porcelain

Sard is not Onyx

most natural topaz is colorless

Brazilian Amazonite is an opaque blue to green to light green stone

but rather a dark variety of Carnelian

Diopside 2.5mm Table Cut Cube Bead - 15-16 Inch Blue Opal Porcelain Agate is a naturalDiopside is a calcium and magnesium silicate mineral. It is transparent or translucent, and can display a nearly emerald green color due to the presence of Chromium within the stone. It is believed to increase ones metaphysical connection with the earth.