White crystalline limestone/marble, also known as borderline marble, was deposited as carbonate crystal sediment in relatively cold deep seawater. This sedimentation process, followed by subsequent lithification, excluded the inclusion of magnesium into the crystal structure. Later compaction of the stone with the loss of water being expelled did not involve the percolation of chemical elements such as magnesium, manganese, and iron. This is evident in the rock formation with the absence of pink, red, brown, or black veins. The tiles, therefore, consist of pure calcium carbonate crystals, which are extremely stable even in strong ultraviolet light conditions, so yellowing of the stone is nearly non-existent. The stone is recommended for all types of applications, including swimming pool tiles. Given the strong light reflection when polished, we advise a sanded finish for outdoor terrace applications.