A few minor things I've noticed on my first playthrough.

Originally Posted by Lancet FAQ
Ore veins in DKS seem to work differently than ED. Ore seems to go up to 5
at a time, with gems limited to 0 to 4 of each. 4 gems seems to be even rarer
than it was in ED. More work is needed to better study the properties of ore
veins. Similar to 4 gems, 0 ore is possible, however extremely rare.


I'm playing DKS (1.4.9.70), and apparently it's possible to get 5x gems from a single vein. This was taken today.

[Linked Image]

Originally Posted by Lancet FAQ

Malachite Ore Vein #5: Well Cave
Malachite Ore Vein #6: Well Cave

This is found in the room where Zagan is fought. However, it requires
getting it BEFORE triggering the fight. To reach it, jump along the rocks on
the south side of the large chamber where Zagan is. This is done by going
around the left side of the large dragon skeleton near the entrance. The
jumps can be tricky, but it is possible. Directly south of the large
Hellgate, there will be a large flat rock with two veins that stick out like
a sore thumb on it. This is one of them. Once you trigger the battle with
Zagan, you cannot loot this vein! Be sure not to miss these gems! Be careful
not to look at Vein #6 by accident when looting this one!


You can also loot these veins after killing Zagan. The dragon morph "block" only affects your keyboard hotkey, if you use the Dragon Stone from your inventory menu, you can revert back to human/dragon form in the lair after killing Zagan.