The stunning black and grey oval Picasso marble gemstone cabochon shown here is 30mm long.  

Picasso marble is a combination of magma and limestone which was formed millions of years ago, creating colours and patterns which are similar in appearance to Picasso’s art, hence the name.

Picasso marble is believed to strengthen self-control, clarity, stablilty; give total recall of dreams and assist in meditation. It apparently helps expand the mind, and aids in the manifestation of physical and material goals. It is believed to help to heal viral infection.

I used this cabochon to create this custom piece: