Answer:
Ancient and majestic, great big piles of stones, Used to encase both riches and bones. Seen from certain angles, They look like big triangles.
Precious stones in a pack of cards.
I travel the world and I am drunk constantly. Who am I?
They are two brothers. However much they run, they do not reach each other.
Longer than a decade and shorter than a milennium
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.