Size: One size Available in a single size, with the pendant's weight ranging between 2.05g and 2.18g depending on the shape. Mao Cat with black onyx stone – 2 stones Available in three animal shapes: Bao – Bear Mao – Cat Vao – Dog Onyx This mineral has been known since the Middle Ages and is actually a black variety of chalcedony (agate). It’s often confused with obsidian or black tourmaline, but all three stones have very different healing properties, so it’s important to choose carefully. Onyx primarily strengthens self-awareness, clear thinking, and logic. It can be especially helpful for emotionally unstable individuals, as it balances energy flow within the body. It is a strong protective stone that repels negative entities. Onyx boosts vitality, endurance, and provides support in stressful situations.