Dimension stone converted to dimension stone production. However, first the stone shattered by heavy and indiscriminate blasting must be removed. Dimension stone is separated by more precise and delicate techniques, such as diamond wire saws, diamond belt saws, burners (jet-piercers), or light and selective blasting with Primacord, a weak explosive. A variety of igneous, metamorphic, and sedimentary rocks are used as structural and decorative dimension stone. These rock types are more commonly known as granite, limestone, marble, travertine, quartz-based stone (sandstone, quartzite) and slate. Other varieties of dimension stone that are normally considered to be special minor types include alabaster (massive gypsum),
Ophrys insectifera dark in colour, varying from maroon to black and on which there are two shining 'pseudoeyes' as well as an iridescent blue/grey patch evolved to resemble an insect's glistening wings. Chromosomes 2n=36 The genus name ""Ophrys"" derives from the Greek word "ophrys", meaning eyebrow, while the Latin epithet "insectifera" means insect-bearing or insect-carrying, referring to the unusual appearance of the flowers. It is native to Europe, favouring sites with damp, alkaline, unimproved soil. It can be found growing in beech woodlands, on forest edges, in scrub, on limestone pavement, limestone grassland, in chalk pits and wet meadows as well as