Turquoise (Opalescent) stuff

I was set a very hard challenge by Ms. Debbie N. to create an "Opalescent" colour collage. Not much opalescent goodness around my place, except this beautiful opalescent glass bowl found in an op shop one fine day( made in France, very lovely). I absolutely adore opals though. I used to admire my Nana's beautiful opal ring when I was little, and remember distinctly she promised to leave it to me when she passed away. Unfortunately it didn't happen. I have since heard that it is bad luck to receive opals as gifts.
I guess I won't be asking for this ring for Christmas.So I picked my favorite colour that shimmers from opals.......and give you Turquoise stuff!