Case Study #003 White Marks on White Marble – Bank Lobby

Problem: White Carrarra marble has little white dots all over it. The dots are heavy in high traffic areas.

Investigation: Visual inspection showed what are called Stun Marks or Crystal Fractures. (See image)

Conclusions: Stun marks are caused by impact from woman’s high heels or a sharp or heavy object being dropped. The pressure placed from a high heel causes the stones crystals to crush and explode which results in a small white mark that cannot be felt. Certain marble types such as White Carrarras are prone to this type of damage.

Summary and Solution: In some cases the white marks can be removed by a stone expert resurfacing the floor. This must be done by a professional stone restoration contractor. Stone Forensics provided the specifications for this work as well as over-saw the process.

[stun marks, white marks on marble, how to remove white marks on marble, stone expert, natural stone, marble expert, white carrarra marble]

Stun marks caused by impact from woman’s high heel shoes.