The shape, colour and pattern of every single piece of agate is not only unique — it’s a genuine mystery. Scientists have come up with competing theories as to how agate’s many layers of brilliant colour are formed, but no one can fully explain how nature’s most complicated stone takes form. And we wouldn’t have it any other way. Layer upon layer of different shades of blue mean that every stone is a natural work of wonder, an inexplicable slice of beauty, draped around your neck. The stone may be impossibly beautiful, but our pricing makes affording the extraordinary possible.