You must have DARK GREEN BLOCK and DARK AQUA BLOCK to make JADE BLOCK. JADE BLOCK is in hat category. Lunch brake plant. Not for speed eaters though. Breaking JADE BLOCK gives you 5 experinece points per tree and block you brake. Oops, there is no entry in the database about durability. If you know something, please share. Currently we do not yet have knowledge about the seedratio of JADE BLOCK. Unfortunaltely gemratio information is not available. There is no data about blockratio.