How many diamonds equal $1?

Good day, I'm curious about the correlation between diamonds and their monetary value. Specifically, I'm wondering, how many diamonds would one need to acquire in order to equate to the value of $1? Is there a standard measurement or does it vary depending on the quality, size, and other factors of the diamond? It would be greatly appreciated if you could provide some clarity on this matter. Thank you in advance for your time and expertise.