E - Examples of Famous Opals
There are many famous Diamonds ( The Star of Africa ), Rubys ( Sunrise Ruby ) and Emeralds ( The Chalk Emerald ), but what of the Opal?
Australia's national gemstone is the opal, a stone famous across the world for its brilliant colours. ... Australia is home to the world's highest quality, precious opal. Here are some of Australia's better-know Top Opals:

- Fire Queen
- The Black Prince
- Pride of Australia
- Empress of Australia
- The Flame Queen
- Olympic Australis
- Halley's Comet
- Butterfly Stone
You can read more of these famous examples at this link.
This Cache
You will find this cache in a rock cairn - a pile of stones marking the location of the cache
This cache is part of the Opal Muster Tail established for the Queensland Outback Geocaching Muster (QOGM) 2021 Paroo - one of fifteen caches each of which contain part of the coordinates for the Mystery Cache "Opal Muster Tail Final"
Each cache contains a logbook for you to sign. In addition, there are some "opals" in each cache which must be opened to discover which "opal" has the clue to the final. Record your clues to discover the location of the cache "Opal Muster Tail Final".
The image below is how the original cairn for this cache was constructed. PLEASE RETURN IT TO THIS STATE AFTER YOU HAVE REPLACED THE CACHE.
Keep the cache covered but away from the rocks Their summertime heat could deform the plastic. Especially the lid - keep the rock cover ABOVE the cache so it is NOT touching the lid. Thank you for helping prolong the life of this cache.

Happy Fossicking!