For the most part of the last year, Ether was the second most valued cryptocurrency in the world. It was recently replaced by Ripple which has seen about 50,000 percent rise in last 12 months.
One week ago, Ether was trading at USD 752. Since then it has seen a surge of about 40 percent in its valuation. For the major part of December, the value of one Ether was swinging between USD 700 and USD 800.