Water hyacinth is a common fruit, and solid seed is one of the main components of water hyacinth. The weight of solid seeds of Eichhornia crassipes will vary with the variety, maturity and size of Eichhornia crassipes. Generally speaking, the weight of solid seeds of Eichhornia crassipes is about 0.4 g.

The solid seed of Eichhornia crassipes is a common raw material for jewelry and a kind of gem, and its main component is garnet.