The Sunstone is just what it appears to be – a star in a bottle.
That is to say, what it appears to be to the normal senses is an almost weightless crystalline sphere, roughly a foot across, shedding light and warmth all around it. A close inspection of the Sunstone, necessarily through darkened lenses, reveals whorls of flame shifting endlessly across its surface in patterns of light and dark spots, broken only by fiery prominences erupting from the surface and falling back once again. In short, a perfect model, one might think, of a sun.
Closer inspection, on the other hand, reveals that the Sunstone is a sun-in-a-bottle in the precise sense that a ship-in-a-bottle is not. Its crystalline surface is free of any of the discontinuities characterizing baryonic matter, because its surface is merely the topological defect bounding the dimensionally transcendent cystal universe within – a vast, encapsulated volume containing a true star as its sole inhabitant. The effects of the mass of the star does not cross this superficies into our parent universe, leaving the Sunstone almost weightless. Nor do the majority of the photons emitted by the star, deflected at right-angles to reality by some arcane means to fuel the mechanics of the axiomantic warp, with the convenient side-effect of making it possible to approach and manipulate the Sunstone with some degree of safety.
What is its purpose? Well, aside from its roles as experiment, proof-of-concept, and asírdaëlíthal for the gentlesophs of the Irreality Vault, I expect the principle role of the Sunstone will be to prove to exoarchaeologists of the future, gentle reader, that we have now equaled the Precursors in our ability to confuse, bemuse, and amuse.
– editorial, issue 394, “Scientific Progress Says What?“