seconded, stone gets my voteStone. I can build the Oracle and the GL without Marble, but I'm not able to build the Mids without stone.
The way I see it, is that Stone provides a savings on lots of World Wonders (like Stonehenge, Pyramids, and Great Wall), but not many National Wonders, whereas Marble provides savings on lots of National Wonders and a few World Wonders.
Heroic Epic and National Epic can be considered must-build wonders for any game, and having the Marble for those 2 builds can provide a crucial production advantage. As far as Marble wonders go, there is the Oracle and Temple of Artemis.
I consider cheap wonders like Stonehenge and Oracle to be more cost-efficient than expensive wonders like the Pyramids. After all, the more expensive a wonder is, the higher the risk for it being captured by an enemy civ. Both Stone and Marble affect production speed of both cheap and expensive wonders, but the advantage that Marble provides in building National wonders tips the scales in Marble's favor.
I've never lost a race to build a national wonder. I'm going to build NE and HE whatever resources I have so they aren't an important factor in marbles favour for me. That I can build the Pyramids much quicker with stone is a major factor in its favour. Having stone is more likely to affect what I build than having marble will.
The way I see it, is that Stone provides a savings on lots of World Wonders (like Stonehenge, Pyramids, and Great Wall), but not many National Wonders, whereas Marble provides savings on lots of National Wonders and a few World Wonders.
Heroic Epic and National Epic can be considered must-build wonders for any game, and having the Marble for those 2 builds can provide a crucial production advantage. As far as Marble wonders go, there is the Oracle and Temple of Artemis.
I consider cheap wonders like Stonehenge and Oracle to be more cost-efficient than expensive wonders like the Pyramids. After all, the more expensive a wonder is, the higher the risk for it being captured by an enemy civ. Both Stone and Marble affect production speed of both cheap and expensive wonders, but the advantage that Marble provides in building National wonders tips the scales in Marble's favor.
Stone accelerates Oxford university and one other late game national wonder I can't remember.. So Marble isn't the only one accelerating national wonders.
Even Oxford become available when I have developed decent production.
Building National wonders is about speed, get them up faster means a few more Axeman (HE), a faster GS to bulb liberalism (NE) in crucial moments.
Stone used to accelerate Ironworks before BtS 3.13 and still accelerates West Point and Mt. Rushmore.
But the chances are very great your Oxford city is NOT one of those high production cities.
Since the HE is already going in a high production city, and the NE goes in a city with ridiculous production potential due to the "extra" population, you're really only talking a few turns difference between having & not-having Marble.
In practice, the turn reduction from Stone to your Oxford city is going to far outweigh the turn reduction from Marble to your HE & NE city.
If National Wonders is the weighting for choosing Marble or Stone, Stone wins hands down in every respect.
With the case of Oxford (and some other National Wonders) is that building it can become secondary to building military units and taking advantage of the high firepower of cavalry/grenadiers/riflemen/cannons.
The way I see it, is that Stone provides a savings on lots of World Wonders (like Stonehenge, Pyramids, and Great Wall), but not many National Wonders, whereas Marble provides savings on lots of National Wonders and a few World Wonders.
Stone (BtS 3.13) grants bonuses on 10 World Wonders and 4 National Wonders. Marble grants bonuses on 8 World Wonders and 3 National Wonders.
But the chances are very great your Oxford city is NOT one of those high production cities.
After getting this clarification, I see no point in preferring marble over stone. Of course it's game dependant and blah blah blah, but generally there's no way marble could compete with stone.