Marble Quality Designation

Carrara marble has been used since the time of ancient rome and it was called the luni marble.

Marble quality designation. In the 17th and 18th centuries the marble quarries were monitored by the cybo and malaspina families who ruled over massa and carrara. The thickness of tile its calibration offers one indication of its quality. Thassos aaa for example is a higher quality of stone than standard thassos. The family created the office of marble in 1564 to regulate the marble mining industry.

Also ask for the marble s hardness factor. 6 rock mass blok quality designation. Obviously the thicker the marble tile the better as marble tiles naturally contain flaws. Mining rock quality designation rqd sgs s approach is to understand the variability in your deposit and map it using proven grindability technologies such as rock quality designation rqd.

The a classification is the highest quality and d is the lowest in terms of that particular marble slab s soundness or how easy it is to work with from a fabricator s or an installer s perspective. Bqd 100 σ s 1m l where s is the. If a stone has a high hardness factor yet seems to have fiberglass resin fill or fissures this is a poor quality tile of that stone. The city of massa in particular saw much of its plan.