Enlarge / Ether, the cryptocurrency of the Ethereum network. (credit: https://ethereumprice.org/) Ether, the currency of the Ethereum network, has plunged 9 percent over the last 24 hours. The virtual currency is now worth about $290—the first time it has been below $300 this year. The declining price is part of a broader cryptocurrency sell-off that saw most major cryptocurrencies lose value over the last 24 hours.