Onyx is not just a stone. It is the only natural mineral capable of transmitting light through its entire structure. In 2026, backlit onyx moved beyond simple decor, becoming a high-tech tool for atmospheric control in premium spaces. In this article, we break down the anatomy of creating the perfect light surface, from the physics of the stone to software-based DALI integration.
The Physics of Stone: Why Onyx?
In 2026, the architectural community returned to the term 'luminous matter.' Onyx, being a calcite with a unique crystal lattice, has a light transmission coefficient from 15% to 45%. This allows light not just to reflect off the surface, but to penetrate 2-3 centimeters deep, creating an effect of 'internal volume'.
It is important to understand that not every slab is suitable for backlighting. At Reception Space, we perform spectral analysis of each stone during the procurement phase. Some varieties, like 'Alabastro' or 'Miele', perfectly diffuse light, while darker varieties require more powerful LED matrices with a high Color Rendering Index (CRI > 98).
