I think emeralds should be able to be sold to the server. Like diamonds this is an ore obtained through mining and can get up to four per ore with fortune 3. So I think the price should be around the same as diamond in the 20-30 range and be able to be sold. Thanks please comment on here anything you have to say.
Emerald are really common in extreme hills biomes, so I would have to disagree with the price. I don't think there should be a /sell hand price. Sell hand was only added for diamonds because the market was crashing, emerald still sell for $40 each so the market is fine no need for a sell hand. The more users controlled markets the better for the server.