In New World players can break down gems into gemstone dust which can be used for brief protection from elemental damage. Tier V gemstone dust is expensive as it comes from Tier V gems and Tier V gems are needed in a lot of areas in the game; mostly to slot into gear for whatever the weekly mutation rotation is. Once a gem is turned into dust or locked into a piece of gear there is no getting the gem back. Thus it is not smart to turn valuable gems into dust and dust is therefore expensive.
New Idea: If a piece of gear has a gem slotted and that piece of gear is salvaged give players gemstone dust as a salvage reward. This would make dust more widely available and ensure it doesn't feel like you are giving up a firstborn child's worth of gold for 20 seconds of elemental protection.