You can download .gem files using gem fetch:
.gem
gem fetch
gem fetch activesupport consul
Your development team has a full backlog? No time for infrastructure architecture? Our DevOps team is ready to support you!
This will produce files like active-support-5.0.0.gem and consul-0.12.1.gem in your working directory.
active-support-5.0.0.gem
consul-0.12.1.gem
Dependencies will not be downloaded.