When researching for this project, I did look up the densest metal possible: Osmium. Osmium has density of 22.59g/cm^3, which is 17% greater than gold's 19.28g/cm^3. (For comparison, lead is 11.34g/cm^3 and silver is 10.5g/cm^3.) Sadly Osmium melts at 5500ºF and can form toxic vapors, so making a ring out of it would be impractical.
When researching for this project, I did look up the densest metal possible: Osmium. Osmium has density of 22.59g/cm^3, which is 17% greater than gold's 19.28g/cm^3. (For comparison, lead is 11.34g/cm^3 and silver is 10.5g/cm^3.) Sadly Osmium melts at 5500ºF and can form toxic vapors, so making a ring out of it would be impractical.