This is Blue Onyx or if you want the fancy name - Lemurian Aquatine which it’s called too.
Blue Onyx - as I like to refer to it as, resembles sand art. Layers or banding of Ocean like blue with the light yellow detailing which almost looks like sand.
A calming crystal like many blue crystals are, can help alleviate stress and mental and physical stresses. It can also aid in emotional balance 💙
Height 88cm
Ref bo13d