Its like a jig saw puzzle but the picture is in your head.
It is ALL opal including the gorgeous sea. I'm using 6000 adhesive which can be removed with about 20 lbs of pressure. The front is now done with a masterful sea bed base of opal matrix which required steel epoxy. There are 25 fish and coral made of opal but the sea looks open with depth. The display of more valuable gems will be on the back.
Some opals are 30% water. Water and carbon are the ingrediants of life.

Its 80 out so I better do some yard work....