A clear, colorless opal.
reflect light or colors like an opal.
a reddish opal with small patches of brilliant color.
emit a play of colors, like those of an opal.
All the OPEC opal in the Opel is opaque.
In the opal cutting process the potch is ground away from the presentation areas of the gem opal.
This is an arrangement similar to that found in opal (except that in opal the spheres are made of silica) and the result is, indeed, opalescent.
Oxidized rhodium plated stud drop earring with blue opal and clear crystal.
An opal that is almost opaque when dry But transparent when wet.
A client from Greece looks for laser engraver machines to engrave portrait on crystal &opal.
Budaoweng has two kinds, one is hydrogrossular, the other is chalcedony-opal.
lonely creeks are opal in the dawn, sword-blue in the sun, grayly silver under misty moons.
Our opal stone products have the excellent performances to resist the acid, alkali, fire, shock and penetration.
Fabrication of germanium inverse opal three-dimensional photonic crystal by Low Temperature Plasma Enhance Chemical Vapour Deposition fill techniques
After that, a layer of nickel was electrodeposited on the opal, which was then etched away. The porosity of the nickel layer was then increased using electropolishing.
The article investigates into the special printing technique with opal, which can enhances the absorbance of fabric, release negative ions, and improve living environment.
Who had invited whom to such a tale in which radiant traces of opal green gleamed, faded, and gleamed again? Just in a flash.
Gillett's Jewellers -any Jewelry Mall visitor will receive a free opal with the purchase of any of our wedding or dress rings plus free worldwide delivery.
For many years researchers have been trying to develop a synthetic material with the same light-scattering properties as an opal, by etching patterns into various materials. That approach has failed.
The sun dipped in the afterglow on rock body shot under cloud blanket, you will see a red, purple, the center part of the color ring like a shiny opal glass.
A very hard mineral composed of silica, SiO2, found worldwide in many different types of rocks, including sandstone and eties of quartz include agate, chalcedony, chert, flint, opal, and rock crystal.
