How much is 1000 gems worth?

Excuse me, could you please clarify for me the current value of 1000 gems in terms of monetary worth? I'm interested in understanding the potential return on investment if I were to acquire such an amount, and I'm hoping to get a clear picture of its current worth in the market. Additionally, is there any way to track the fluctuations in the value of gems over time, and if so, how often do these changes occur? Thank you for your time and assistance.