Set a cushion square stone in a setting. Keeping the stone centered, use your fingers or a burnishing tool to gently bend the prongs over the stone.
Smooth the prongs firmly in place with a burnishing tool.
Repeat with other 3 stones.
Add a pinch bail to the top of a spike pendant. If necessary, slightly open and/or straighten with smooth flat-nose pliers. Press bail closed with fingertips. Repeat with other spike pendant.
Use flat-nose pliers to open the loop on an ear wire. Attach to top loop of the setting that one of the light turquoise stones is set into. Make sure the stone is facing forward, and close the loop. For best way to open and close loops, see Jump Ring Hint in Jewelry Basics 101 (PDF).
The bottom loop is already open and requires no jump ring. Attach it to an indicolite stone's setting. Close loop.
Attach the bottom loop of this stone to the top loop of the bail.
Repeat for other earring.
4 each #41-878-51-10-3 JBB Findings Silver Plated 2-Loop Bezel Setting for 10mm 4470 Cushion Square Stone