Electrum Major

Source: Taken directly from Ink Monkey Bones #4 on Eric Minton's blog.

Electrum Major is made from equal parts Orichalcum and Moonsilver, along with trace quantities of Gold, Silver and Quicksilver. Though strong by most standards, it is softer than either of the magical materials used in its manufacture. Electrum major effectively channels various flavors of Essence, and is used to harmonize flows of Essence that would otherwise be incompatible.