The Diamond Waterfall is arguably the most colourful waterfall in the Caribbean – less than a mile east of Soufrière's town center.  What makes this waterfall stand out is that its waters are laced with minerals as its stream emanates from rainwater mixed with volcanism, giving the falls a colourful appearance that seems to change often.

At the Botanical Gardens, a well-maintained path winds its way from the hot spring mineral baths through ferns and banana plants to a spot where the Diamond River drops into a picturesque waterfall.

This waterfall is approximately 17 metres in height and is a mixture of rainwater and volcanism fed by the Sulphur Springs. The flow of water varies at different times of year but is always spectacular.

The water is laced with minerals, sulphur, copper sulphate, magnesium, iron, manganese and calcium, all contributing to the kaleidoscope of colours that adjourn the rock face behind the falls.

The rock face continues to change colour depending on the mineral content at any given point in time.