Hand stamped solid yellow bronze pendant.
 
The pendant is about 0.5" with an embedded 2 mm alexandrite.
 
The shown satellite chain is very dainty and is not recommended for longer than 18" long. 
Other 14k gold filled chain length and thickness options are available.
The thin chain is 1.4mm.
The med chain is 2.3mm.
Gold filled has 100 times more gold than plated thus does not rub or peel off.