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Ashlar ( / ˈæʃlər /) is a cut and dressed stone, worked using a chisel to achieve a specific form, typically rectangular in shape. The term can also refer to a structure built from such stones. [1] Ashlar is the finest stone masonry unit, and is generally rectangular ( cuboid ).
Cut (gems) A decorative glass crystal about 4 cm (1.6 in) in diameter, having a facet cut often applied for gemstones. At some positions, coloured light (see rainbow colouring) can be regarded caused by the intended optical prism effect of the cut. A gemstone desired to be used in jewelry is cut depending on the size and shape of the rough ...
Dimension stone is natural stone or rock that has been selected and finished (e.g., trimmed, cut, drilled or ground) to specific sizes or shapes. Color, texture and pattern, and surface finish of the stone are also normal requirements.
Examples of lapidary products. Gemcutting in Thailand. Lapidary (from the Latin lapidarius) is the practice of shaping stone, minerals, or gemstones into decorative items such as cabochons, engraved gems (including cameos ), and faceted designs. A person who practices lapidary is known as a lapidarist.
Brilliant (diamond cut) A scattering of "brilliant" cut diamonds shows off the many reflecting facets. A brilliant is a diamond or other gemstone cut in a particular form with 57-58 facets so as to have exceptional brilliance. The underside is conical, a shape that provides maximal light return through the top of the diamond.
Stone has been used in construction for thousands of years, in many contexts. Listed below are six types of classical stonemasonry techniques, some of which still see widespread use. Ashlar masonry. Stone masonry using dressed (cut) stones is known as ashlar masonry. Trabeated systems.
Meleke ( Arabic: ملكي, "royal", "kingly"; Hebrew: אבן ירושלמית ), also transliterated melekeh or malaki, is a lithologic type of white, coarsely-crystalline, thickly bedded- limestone found in the Judaean Mountains in Israel. [1] [2] It has been used in the traditional architecture of Jerusalem since ancient times, especially in ...
Diamond cutting is the practice of shaping a diamond from a rough stone into a faceted gem. Cutting diamonds requires specialized knowledge, tools, equipment, and techniques because of its extreme difficulty.
Present, dichroism or trichroism, depending on heat treatment. Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate ), caused by small amounts of vanadium. [3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Simanjiro District of Manyara Region in Tanzania, in a ...
Cast stone or reconstructed stone is a highly refined building material, a form of precast concrete used as masonry intended to simulate natural-cut stone. It is used for architectural features: trim, or ornament; facing buildings or other structures; statuary; and for garden ornaments .