Category Archives: Vratsa

Finishings of Natural Stone

Finishings of Natural Stone

Finishings of natural stoneAfter the quarrying process, natural stones can be modified by the finishing process in many ways. The finishing’s are often selected based on the intended use of the stone and according to the interior and exterior application using a variety of techniques and mechanical processes. Some of the typical natural stone finishes […]

The Life of Natural Stone

Life of Natural Stone

The Life of natural stone What is natural stone? It is a stone that is dug up from the earth and is mainly quarried from a mountainous ground. There are many types of natural stones, including slate, granite, limestone, basalt, quartzite, marble, sandstone and travertine etc. The aesthetics and characteristics of natural stone are defined […]

Quality control


Qualitätskontrolle bei Natursteinen ist keine Option, sondern eine Notwendigkeit. Natürlich hat jeder Naturstein seine besondere Beschaffenheit, und die eine oder andere Unregelmäßigkeit gehört quasi zum guten Ton, schließlich ist es ein Naturprodukt. Nichtsdestoweniger beginnt die Qualitätskontrolle mit dem Beginn einer potentiellen Geschäftsbeziehung. Wie läuft das bei uns in der Regel ab: Wir setzen größten Wert […]

Physical and mechanical characteristics of natural stone


Natural stone has various physical and mechanical parameters that differ from stone to stone. Let’s have a look at some of them that are most commonly used. Weight per unit of volume = the ratio between the weight and the apparent volume of the stone which corresponds to its actual weight. This also includes the holes […]

The hardness of natural stone


Why is it important to know the hardness of natural stone? The hardness of stone can decide, for example, how easily natural stone can be polished, and how long this polishing will last. The so-called Mohs scale is a scale ranging from 1 to 10, with ten being the hardest. This scale is a relative […]



Vratsa derives its name from the largest city in northwestern Bulgaria. The stone is actively quarried in the Vratsa district, particularly around the villages of Gorna Kremena and Varbeshnitsa. Vratsa is a very robust and frost-resistant stone, a fact that explains why it is so often a familiar sight in many countries of central and […]