October Gemstones – Opal Quiz 1. Where is the opal capital of the world? Virgin Valley, Nevada Queretaro, Mexico Coober Pedy, Australia Vernon, British Columbia None 2. No two opals are the same. True False None 3. What is a Gilson opal? An opal found on Ernie Gilson's property Another name for potch An extremely valuable opal from Gilson, an outback town A synthetic opal None 4. What sort of opal is often used when making a ring? solid stone sonnet couplet free form None 5. Name the process of collecting uncut opals from the mounds of rock that have already been extracted? canoodling noodling panning dry blowing None 6. What is a triplet opal? An opal mined with three strategically placed explosives An opal mined with a specific drill An opal with three different layers An opal with three different colors None 7. Which type of opal is iridescent - precious or common? Precious Common None 8. Which of these is the most valuable type of opal? Black opal Boulder opal White opal Crystal opal None 9. Putting your opal out in a lightning storm will improve the colour. True False None 10. What birthday month is opal a birthstone for? December February October July None Adapted from Australia's National Gemstone - The Opal quiz on Funtrivia.com with permission. Time's up
