Alyarite

Alyarite is an organic compound found in volcanic areas. It is made of the semi-fossilized remains of Alyaroth demons’ wing muscles. Located at the base of the wings and under the shoulder, the wing muscles are the strongest muscle group in the Alyaroth body, able to support the creature’s entire body weight for prolonged lengths of time during flight. They are located close to the hearts, causing them to be well-supplied with sulphated ichor and remain as such for far longer than most other body parts during decomposition. If an Alyaroth corpse is located in sulphur-rich ground when it decomposes, it is possible for the wing muscle group to harden on the outside, while remaining intact and alive inside, forming an Alyarite geode.

Alyarite geodes can be obtained through the Mining skill in various volcanic places throughout RuneScape by mining an Alyarite fossil. Geodes can be mined with a Mining level of 85 or higher, and doing so grants N/A Mining experience. The geodes can be smelted with one Byzrite shard, four pieces of Imcandite and one heap of Hellflux through the Smithing skill to form an Avernium bar, which can then be smithed into various pieces of Avernic armour.