The recent mining license revocations in Guinea have become a key factor influencing market trends.

Na₂O, as a major impurity in WFA, has a significant impact on its properties. Na₂O mainly forms β-Al₂O₃ with Al₂O₃, reducing the hardness, density, strength, and thermal stability of WFA.

VA has a violet color appearance and great hardness and toughness similar to single crystal fused alumina.