Peter Istenik from Slovakia, created this artwork from Black granite. I love the anatomical design of this skull and hand. The shading made by using a hand engraver, is delicate and works well with the multi-tonal shiny granite. This particular granite reminds me of outer space, for which the science theme seems appropriate. To see a time lapse video of this piece being engraved, head to the bottom of this post.
Here is the time lapse video of this engraving being created.