Blue Opal 10x20mm Nugget - 15-16 Inch R1133 but rather a dark variety

but rather a dark variety of Carnelian

which forms in geodes and is generally found in clusters of crystal points

The name "topaz

Crazy Lace Agate is often dyed to produce colors that do not naturally occur in the stone

the colors are naturally occurring

Blue Opal 10x20mm Nugget - 15-16 Inch R1133 but rather a dark varietyBlue Peruvian Opal naturally occurs with swirling patterns of deep blues, blue to greens and greens swirled with yellow to green, rust, brown and orange. It is highly prized for its beautiful combinations of colors and for its opalescence the pearly luster of the opaque stone. Peruvian Opal was considered by the Incas to be a gift from Pachamama, the Inca Goddess of Fruitfulness and Mother Earth.