This cute and weighty pure silver acorn is actually made from the top of a lamp fineal.   I added the cap and loop for a chain. It measures about 5/8  inch by 1  inch. 
 
This listing is for the pendant only. You can select sterling silver snake chains to add to the pendant in sizes ranging from 16"  to 20".
 
PMC, or Precious Metal Clay, is a clay product which is easily worked, carved, textured, and shaped, and once fired results in a pure silver piece of art. (I use PMC that is .999 silver, but it is also available in .925 sterling silver, gold, bronze and copper).