Do these modalities all work, or none, or only some? And what can a person realistically expect as they undertake these different practices?
It’s called a “vajra,” and it’s one of those ubiquitous symbols seen across the Indian subcontinent. In Tibetan Buddhism it points to the whole Vajrayana “Diamond” Path. Different people describe the vajra’s symbolism in different ways. One wildly ambitious way is as the sum total of reality itself, or at least, three fundamental ways of experiencing reality.