Uncut Vegan Glow-Worm GemstonesWe take our brightest ever 'vegan glow worm' glow in the dark material, and sinter it with heat and pressure in a mixture of silica (the same substance that makes up most rocks, as well as over 90% of the earth's crust). This produces actual glow in the dark stones, which are somewhere between glass and rock. Make your flower beds glow, illuminate your bonsai trees, you can even use them in fish tanks (but wash them first). Because they are literally