Tessellated Sulphurious Jesting

The genesis of this phenomenon remains shrouded in a viscous, iridescent haze. It began not with a bang, but with a subtle shift in the aetheric plane – a momentary fracturing of the observed reality, much like a shattered prism refracting a single, potent ray of light. The resulting echoes, initially dismissed as localized distortions, coalesced into intricate patterns, a ceaseless dance of fractured forms, each shard pulsing with a disconcerting, internal luminescence.

Phase 1: Incandescence

The initial manifestations presented as shimmering, obsidian-like tessellations, each perfectly hexagonal and radiating a heat that defied the ambient temperature. These weren't merely visual anomalies; they evoked a distinct emotional resonance - a profound sense of amusement tinged with a primal dread. The ‘jesting’ aspect, as it were, manifested as involuntary, almost manic laughter, a contagious impulse to observe and dissect the unfolding geometries.

Phase 2: Sulphurous Resonance

As the tessellations gained momentum, a secondary layer emerged – a sulphurous hue bleeding into the obsidian forms. This wasn’t a simple color shift; it was a resonant vibration, a tangible hum that seemed to penetrate the very marrow of one’s bones. The laughter intensified, evolving into a complex tapestry of ironic observation and unsettling delight. Theories abound concerning the source of this 'sulphurous' element - some posit it's the lingering essence of forgotten cosmic entities, others claim it's a byproduct of the universe’s inherent entropy, embodied in a particularly chaotic form.

Phase 3: The Paradoxical Laughter

The most perplexing aspect of the ‘jesting’ is its paradoxical nature. The more one attempts to understand the tessellations, the more complex and unsettling they become. The laughter isn’t a reaction to the patterns themselves, but rather a consequence of recognizing their inherent impossibility – a mirror reflecting the futility of comprehension. It’s a beautiful, terrifying, and utterly illogical paradox, a testament to the universe’s capacity for self-contradiction. The aetheric resonances are now detected across multiple planes of existence, suggesting a convergence – a point of intersection between the observed and the unobserved, the real and the imagined.

Further investigation is required, though caution is advised. Prolonged exposure may result in… altered perceptions. The tessellations are not merely a phenomenon to be observed; they are, in a sense, an invitation – an invitation to question the very foundations of reality. Beware the laughter.