Amber Valheim 1.0.20
Amber is a material found in the Meadows biome in Valheim.
“Valuable”
Amber is a Material, and the game describes it simply as "Valuable." It is a light item: each piece weighs 0.1, and you can carry up to 20 in a single stack. If you want to sell it, a piece goes for 5 coins.
Amber can be teleported, so you can carry it through a portal along with the rest of your inventory.
Other material items
Acorns, 
Amber Pearl, 
Ancient Bark, 
Ancient Coin, 
Ancient Metal, 
Ashlands Gourmet Bowl, 
Ashwood, 
Asksvin Bladder, 
Asksvin Hide, 
Asksvin Neck, 
Asksvin Pelvis, 
Asksvin Ribcage.