Use all of your deductive reasoning skills, look and listen for any clues that will help you find which stones contain carbonate! Kit includes an educational guide with descriptions of each mineral and an explanation of what's causing the fizzing.
1 - Silt Stone
1 - Yellow Calcite
1 - Green Calcite
1 - Limestone piece
1 - Aragonite Cluster
1 - Educational Guide
And 1 magnifying glass to help you discern any "fizzing"!
Vinegar is also required for this activity but is not provided with the kit.
As with all of Mother Nature's creations, appearance will vary, but the item you receive will be similar in quality to the photos above.