Concrete Glow Stones Frequently Asked Questions

How long do glow stones last?

Glow Stones absorb either natural or artificial light and then emit that light as a soft glow during darkness. Exposure of around 30 minutes will give a glow time of approximately 6 – 8 hours. The glow starts off brightly and diminishes as the night progresses. The photoluminescent compound, strontium aluminate which makes the stones glow has a cycle life of at least 10 years.

How do glow stones work?

Premium grade PolyGlow™ Stones have strontium aluminate, the active compound that absorbs and emits light embedded throughout the entire aggregate in a highly concentrated form. This is crucial in both polished concrete and exposed aggregate concrete Glow stones will charge from exposure to either sunlight or artificial light sources. Exposure of around 30 minutes will give a glow time of approximately 6 – 8 hours.

Are glow in the dark stones safe?

Yes PolyGlow™ Glow in the dark stones are safe. The stones are not radioactive and meet safety stands as required. The manufacturing process is designed to create optimum illumination whilst ensuring the product is safe and meets hight standards of glow emission.

What stones glow in the dark?

For a premium glow in the dark stone it is important to have an optimum level of the active compound strontium aluminate. Schneppa Glass’ exclusive premium grade PolyGlow™ Stones have strontium aluminate, the active compound that absorbs and emits light, embedded throughout the entire aggregate in a highly concentrated form. This is crucial in both polished concrete and exposed aggregate concrete. If the active glow compound is only a coating applied to the external areas of the aggregate, if that aggregate is ground back, polished or simply worn out over time, the products ability to perform effectively will be compromised.

What gemstones glow in the dark?

Minerals with phosphorescence can glow for a brief time in the dark.These minerals include calcite, celestite, colemanite, fluorite, sphalerite, and willemite. As a consequence of the very short lived emitting of glow, gemstones and minerals are not suitable as an effective glow stone product as such.