blue+tourmaline
51Miss Earth — Logo of the Miss Earth Pageant Motto Beauties for a Cause Formation 2001 Type Beauty Pagea …
52Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… …
53Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… …
54Nerzfell — Als Nerzfell wird im Rauchwarenhandel heute das Fell des Nachkommens des Amerikanischen Minks gehandelt, die Nachkommen des europäischen Nerzes sind durch die Bundesartenschutzverordnung streng geschützt. Aus der Natur entnommene Tiere dürfen für …
55Agate — For other uses, see Agate (disambiguation). Agate Banded agate (agate like onyx); the specimen is 2.5 cm (1 inch) wide General Category …
56Birefringence — Displacement of light rays with perpendicular polarization through a birefringent material …
57Chelsea filter — In gemmology, a Chelsea filter is a dichromatic optical filter used for identifying coloured stones. Contents 1 History 2 Use 3 See also 4 External links …
58Sky Island (novel) — infobox Book name = Sky Island image caption = author = L. Frank Baum illustrator = John R. Neill cover artist = John R. Neill country = United States language = English genre = Children s novel publisher = Reilly Britton release date = 1912… …
59Diamond flaws — Contents 1 External flaws 1.1 Blemishes 1.2 Scratches 1.3 …
60pleochroism — /plee ok roh iz euhm/, n. the property of certain crystals of exhibiting different colors when viewed from different directions under transmitted light. Cf. dichroism (def. 1), trichroism. [1855 60; PLEOCHRO(IC) + ISM] * * * ▪ optics (from Greek …
