Book Necklace: Black with antique key

This useable and wearable miniature book is covered with a piece of a dark brown scrap from an Israel cobbler and tied with a piece of brilliant blue. I have more brown, but this may be the last of the blue. 

SMALL:
5/8" high x 1/2" wide x 1/4" spine
30 sheets (60 pages)

Comes on a 19" copper chain and a letterpress tag that describes the materials used.