Our biggest agate slices in this range: bold, glowing and made for display.

Agate forms inside volcanic rock, where silica-rich water lays down fine layers over a very long time. A slice this size shows the whole story, from the outer rind to the bands and, often, a crystal-lined centre. Every colour except Natural is dyed for a vivid glow, and Natural is the agate's own undyed colour.

Pieces this size become a feature. Set one in a sunny window and it throws colour across the floor. Some people use them as a tray for a candle or a stand for a small plant, and they always get noticed.

How to use it

• Make it the feature in a sunny window
• Use it under a candle or plant pot
• Display it on a plate stand
• Give it as a big-impact housewarming gift

Care: Rinse with plain water and dry right away, and keep dyed slices out of strong sun for long stretches so the colour lasts.

The details

• Stone: Agate
• Unit size: 6 1/2" to 8 1/4"
• Options: Black (Enhanced), Blue (Enhanced), Green (Enhanced), Natural, Pink (Enhanced), Purple (Enhanced), Red (Enhanced), Teal (Enhanced)
• Sold as: Single piece
• Country of origin: Brazil