A vintage 18ct yellow gold gem-set crab charm or pendant.  
 
This is really lovely, our Crab is set with a sparkling ruby, emerald and diamond on the shell body  and has two cabochon ruby eyes.   In the claws is a cultured pearl.
There is some nice texturing to the shell.
 
This charm would make an equally good pendant, The gold is unmarked and tests as 18ct gold., overall it is in very good condition
Comes with a jump ring ready to attach to your bracelet or pendant chain.