D3v2, in-game costs to create a Marquise gem: 9,370,000 gold, 2143 flawless squares.
Why? What’s happened to item and material values? What’s valuable now to save and what should you be selling or hoarding for Reaper of Souls? This article covers all that on the click through, but here’s a quick comparison to show how much the game changes have altered the value/cost of things. I was 100% correct on point #1, and almost entirely wrong on point #2.
Once I saw that in the RoS beta, and the new tiers of crafting materials (all current materials are as worth as little as as Flawless Square gems in RoS), and the fact that the Auction House was shutting down before Reaper’s launch, I cam to two conclusions and took action back in December: 1) All current items and materials would be obsolete and worthless in Reaper of Souls, and 2) I should therefore sell them ASAP since they were sure to lose all value as the expansion came closer.