This hammer is two sided and is one of my signature pieces.  I made it based on the characters of Ragnarok.  There are many motifs on it: Thor's Head, The Midgard Serpent, Fenrir Wolf, Odins Ravens: Huggin and Munnin , Odins Horse: Sleipnir,  Odins Eye, Odins Spear: Gungnir , Dragon, Triskele Knot, Valkyrie, The Mobius and Igdrasil, Waxing & Waning Crescents.
 

  The weight of this hammer is quite substantial, the Sterling Silver version weighs about  15gms!  The Gold version weighs 18gms!  A chain fits through the top of the pendant Where the serpent is biting a tube.

  Thor's Hammers where fairly common place by the 11th century From Greenland to England to Scandinavia.  It's argued that the rise of the cult of Thor started as Christianity and the Christian Cross as an amulet was gaining popularity.  There is evidence even of a jewellers mold that makes 2 Crosses and one Hammer.

  This pendant looks good on a snake style of chain which I retail for $25.

  I can also make custom Thors Hammers as well as custom Rune Pendants.

In 14K Gold ...$1200
Silver Sterling: $225

Prices in CND $

One side of Thor's Hammer in Sterling Silver.

The Motifs flow into each other over each side.  For example the negative space of the Ravens wings become the Horse's Eight Legs.

From Pagan Scandinavia. H.R.Ellis Davidson. Praeger NY.1967 pg136.

"The elaborate little amulets in Bronze and silver from the tenth century are more complex symbols.  Some have faces with round, staring eyes, and sometimes also the beak of a bird of prey, evidently influenced by the familiar motif of the eagle.  It seems likely that these were intended to portray the terrible fiery eyes of the god of the lightning, emphasized in the literature, while it is noticeable that the hammer-head sometimes takes the place of a beard.  Some of the hammers have elaborate chains, ending in dragon-heads, biting on to the ring which holds the hammer, and these probably symbolize the World Serpent, Thor's adversary. The ring itself may be a reminder of the sacred ring of Thor, the symbol of law and order, said to be kept in his temples, on which oaths were sworn.  There are also patterns of circles and criss-cross lines on the hammers, suggesting rain and lightning." 

Some 10th Century Thor's Hammers.