Each slice is a cross-section of a rock that filled itself in, one thin layer at a time.

Agate forms in gaps inside volcanic rock, where silica-rich water slowly leaves behind band after band. Cut thin and polished, those bands become a glowing pattern you can see straight through. All colours except Natural are dyed to make them pop; Natural is the agate's own undyed colour.

This size is just right for little hands and small spaces. Old Persian stories said agate could even change the weather, which is a fun one to tell kids. They're also a favourite for crystal grids and craft projects.

How to use it

• Line a few up on a windowsill
• Use them in a crystal grid
• Make a mini suncatcher display
• Tell the weather legend to a curious kid

Care: Rinse with plain water and dry right away, and keep dyed slices out of strong sun for hours so the colour stays bright.

The details

• Stone: Agate
• Unit size: 2 1/2" to 3 1/2"
• Options: Black (Enhanced), Blue (Enhanced), Green (Enhanced), Natural, Pink (Enhanced), Purple (Enhanced), Red (Enhanced), Teal (Enhanced)
• Sold as: Single piece
• Country of origin: Brazil