WikiJewelry and Gemstone Wiki - Concise dictionary definitions of terms relating to jewelry (jewellery) & gemstones. If you would like to know "what is turquoise?" or "what are minerals?", then Mochishop's wiki can help.
refraction (n) the bending of light as it passes from air into another medium, e.g., gemstones.
rock (n) an aggregate of minerals. Unlike mineral gemstones, rock gemstones do not have a regular atomic - crystalline - structure. For example, lapis lazuli.
rosaline (n) another name for thulite.
rose quartz (n) a variety of quartz. The pink colour is caused by trace elements such as titanium or iron, for example. [buy rose quartz at Mochishop]
ruby (n) is the transparent red variety of the mineral corundum. Its redness is caused by the presence of an impurity - usually the element chromium - in the corundum. Ruby is considered to be one of the precious gemstones. Cf. Sapphire.
ruby-in-zoisite (n) a combination of zoisite minerals and ruby minerals which form a single specimin. Commonly green and pink.
rutilated (adj) containing rutiles.
rutilated quartz (n) quartz which contains rutile inclusions. Such rutiles often take the appearance of thin gold or brown needles.
rutile (n) the mineral titanium dioxide. Rutiles sometimes feature as inclusions in other gemstones. Rutile inclusions are often needle-like and may also produce asterism effects, e.g., in rubies.
