Matura diamond


Matura diamond
/mah"teuhr euh, mat"euhr euh/, Jewelry.
a zircon heat-treated to render it colorless: not a true diamond.
[1875-80; after Matura, town in Sri Lanka]

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      colourless variety of the gemstone zircon (q.v.).

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Universalium. 2010.

Look at other dictionaries:

  • matura diamond — ˈmäd.ərə noun Usage: usually capitalized M Etymology: from Matura (Matara), town in southern Ceylon : zircon that is naturally or artificially made colorless * * * /mah teuhr euh, mat euhr euh/, Jewelry. a zircon heat treated to render it… …   Useful english dictionary

  • Matara diamond — /mah teuhr euh, mat euhr euh/. See Matura diamond. * * * …   Universalium

  • Matara diamond — /mah teuhr euh, mat euhr euh/. See Matura diamond …   Useful english dictionary

  • Ma|tu|ra diamond — «MAH tuh ruh, MAT », = jargon2. (Cf. ↑jargon) ╂[< Matura, a town in Sri Lanka] …   Useful english dictionary

  • jewelry — /jooh euhl ree/, n. 1. articles of gold, silver, precious stones, etc., for personal adornment. 2. any ornaments for personal adornment, as necklaces or cuff links, including those of base metals, glass, plastic, or the like. Also, esp. Brit.,… …   Universalium

  • Important gemstones — ▪ Table Important gemstones mineral gem name colour Mohs hardness* specific gravity* beryl aquamarine sky blue to greenish blue 7½–8 2.68–2.71 emerald green 2.68–2.74 goshenite colourless; greenish yellow, yellow green, brownish same as… …   Universalium

  • Zircon — Not to be confused with zirconia or cubic zirconia. This article is about the mineral. For other uses, see Zircon (disambiguation). Zircon Zircon crystal from Tocantins, Brazil (2×2 cm) …   Wikipedia

  • zircon — /zerr kon/, n. a common mineral, zirconium silicate, ZrSiO4, occurring in small tetragonal crystals or grains of various colors, usually opaque: used as a refractory when opaque and as a gem when transparent. [1785 95; < G Zirkon; see JARGON2] *… …   Universalium

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