Adamantine

Adamantine is a fine, lightweight metal alloy, made up of a mixture of silver, electrum, and Adamantite.

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This alloy is incredibly light, but also dense and strong, which makes it an excellent substance to forge high-quality weapons and armor. The secret of its crafting is known only to the Drow.

The most important ingredient of Adamantine is "Adamantite," an extremely rare ore, which can be found only in the Underdark or encased within meteors that occasionally fall from the sky.