Marble is one of the 31 Rare Resources in the game and available from the beginning. It appears as a collection of bright grey blocks and stone plates. Like all rare resources on land, it can be obtained by sending a Merchant from the Market to the resource location. Marble provides the following benefits:Classical Age. Colossus). However, it becomes fairly important for the expensive late game wonders, especially when wonder building cost skyrocket thanks to the ramping cost system. Also stacks with the 25% discount on wonder building cost for the Egyptians.