A slice of sunshine made for your finger.
This gemstone has a small druzy pocket (tiny little crystals) that creates a hole that allows you to see the reflective silver behind the gemstone). It's rather difficult to photograph a piece like this, and is much much better seen in person.
Details:
Gemstone: Magma Chalcedony
Metal: .925 sterling silver.
Size: US 7
Dimensions: ~1" long x 3/4" wide.