This is insanely beautiful,  I almost kept it! Approx 9x6x9.5cm
Blue Aragonite is a light turquoise blue variety of a calcium carbonate mineral, this skull is a combination of a very light Blue aragonite and light brown and white Aragonite, it has a hardness 3.5-4.  

 It's commonly found in Austria, Greece, Mexico, China and Morocco
The colours would suggest that the energies of the stone will resonates with your third eye and crown chakra, 

And with stones that resonate with those it will likely help one channel your own unique psychic abilities that aid one in elevating your consciousness. 

When photographing this stone, I personally had a harmonious calming feeling, from that I get a sense that these make for the perfect meditation tool, allowing one to more easily “slip” out of the physical body and ascend to higher vibrations. Blue Aragonite is suggested to be a very calming nurturing stone, with its soft but powerful energy it enables a person to work through things that aid a person's emotional well-being. 

Perhaps it's one to Keep by your bed for an additional power source to aid in lucid dreaming and astral travel.

Blue Aragonite Skull