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Definition of Opal

noun A mineral consisting, like quartz, of silica, but inferior to quartz in hardness and specific gravity.

Opal - pictures with words

Opal - слова по маске

Opal - words with similar meaning

  • Menilite noun See Opal.
  • Opalize transitive verb To convert into opal, or a substance like opal.
  • Semiopal noun A variety of opal not possessing opalescence.
  • Opaline adjective Of, pertaining to, or like, opal in appearance; having changeable colors like those of the opal.
  • Silica noun Silicon dioxide, SiO/. It constitutes ordinary quartz (also opal and tridymite
  • Opalesce intransitive verb To give forth a play of colors, like the opal.
  • Cacholong noun An opaque or milk-white chalcedony, a variety of quartz; also, a similar variety of opal.
  • Hydrophane noun A semitranslucent variety of opal that becomes translucent or transparent on immersion in water.
  • Hyalite noun A pellucid variety of opal in globules looking like colorless gum or resin; -- called also Muller's glass.
  • Chloropal noun A massive mineral, greenish in color, and opal-like in appearance. It is essentially a hydrous silicate of iron.

Opal - more info

Opal - Wikipedia, the free encyclopedia

Opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. 3% to 21% of the total weight is water, but the content is usually between - Cached - Similar

Opal Student Accommodation, student homes and student flats

Opal is a student accommodation provider, with high quality student homes in halls of residence across the - Cached - Similar


The group of fine Opals includes quite a number of wonderful gemstones, which share one characteristic: they shine and sparkle in a continually changing play - Cached

OPAL, Online Permit Assistance and Licensing, Home

OPAL Home. Welcome to OPAL. New York State's Online Permit Assistance and Licensing website. If you want to start a new business or expand your current - Cached - Similar

OPAL | Explore your local environment

Take part in wildlife surveys, improve your identification skills and enjoy science and nature activities near - Cached - Similar

OPAL - CERN - Similar

OPAL: Online Programs for All

The complete schedule of upcoming OPAL public online events. Archive If you missed an OPAL live online event, look for a recording of the program in the - Cached - Similar

Opal: Easy notes and organizing

17 Mar 2012 ... Opal lets you organize just about anything — ideas, reports, lists, notes, projects, graphics — in the form of an outline. If you used Acta, you'll - Cached - Similar

OPAL | Open Educational Quality Initiative

The OPAL Awards recognize outstanding achievements in OER policy, promotion and use. Submissions are invited with respect to: bodies which influence - Cached

ONGC Petro additions Limited

opal, ongc petro additions Limited, polymers, polymer, HDPE, LLDPE, PP, chemical, chemicals, benzene, butadiene, MTBE, CBFS, technical services, technical - Cached - Similar