A certain crater or groove can be “dug” on the surface.

Femtosecond laser impulses do not burn wood.

Femtosecond laser ablation shows the best results for extremely brittle ceramics fabrication -  ablated grooves seem to be homogenous and the wall of the groove least affected.

Almost invisible marking and difficult to reproduce can sometimes help to improve the anticounterfeit security of your product.

Olivine α-(Mg,Fe)₂SiO₄ is the most abundant mineral of the Earth’s upper mantle but is also the main mineralogical constituent of meteorites (mainly constituted of silicates and metals) which are mostly believed to be primitive materials.