While Seething Opals are invaluable for upgrading your gear, they can also be indirectly converted into Diablo 4 Gold or traded for rare Diablo 4 items. Here's how:     Vendor Trades: Certain vendors in Diablo 4 will exchange Seething Opals for gold or crafting materials, allowing you to bolster your wealth. This is a great option if you have surplus opals or want to...