These are a natural solid white opals from Coober Pedy, South Australia ready to be set as a piece of jewellery and would make very nice earrings. They show Green, Orange, Purple and Blue when moved in the light. They have a Body Tone of N9 with a Brightness rating of 4.1.
If you see an opal on this website that you might like to have as a pendant, please contact Peter to discuss if it is possible with that particular stone.
You also need to state if you wish to have a bail fitted or not. If you do, then you would need to be charged for the cost of metal, silver or gold.