Rainbow Obsidian from Mexico "from Brazil" 2021 Lucky Australian "pocket stone.
Falcon or Hawk's eye from South Africa 2021 Lucky Australian "pocket stone.
Stromatolite from Peru ("Andespower-aumlet") 2021 Lucky Australian "pocket stone.
Nothing new! Between 1985-2007 we sold many thousands of these Australian lucky stones, then cut by Stan Soklich (deceased in 2007) but in 2021 the "Lucky Australians" are back in our range!
Stromatolites are a form of sedimentary rock that is often highly stratified and contains a lot of lime. It arises because cyanobacteria trap and retain the sediment. These then form layer upon layer in a manner similar to the way coral reefs form. Stromatolites are one of the oldest fossils, and are found from about 3.5 billion years ago. They were common in the Precambrian, but nowadays they are only found in a few special environments, especially in places where the water is very salty or alkaline. The reason for this is that in normal environments a stromatolite would be 'grazed' by animals much faster than it can be built up. A well-known location of stromatolites is Shark Bay in Western Australia.