You’ll get a nice batch of uncut rubies for free along with said ruby cutter. You can place it wherever you find a free spot, as it doesn’t require access to a distribution house or a road. Don’t add any uncut rubies to the cutter before you have upgraded it, else processing will cut the yield in half. You’ll find it in your inventory bag and its job is to process the uncut rubies you’ll get every now and then into cut ones. You’ll receive a special building, the ruby cutter, very early in the game. Small, but useful items each day, 240 uncut rubies every 7th day and 3k cut rubies on day 100. Just spare the few minutes it takes, as BB rewards consecutive log-ins handsomely.

Log in each and every day, even if you don’t have the time to play. Due to recurring questions ingame, I have put together some bits of advice you might find useful, particularly if you are not familiar with the single player Anno games (basically, Anno Online is kind of a simplified 1404-spin-off ).