| 单词 | spinel |
| 例句 | Quirky and rare, spinel appealed to Mr. Yavorskyy for its translucence, brilliance and kaleidoscopic range of colors. Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z Intent on restoring the gem’s dulled luster, Mr. Yavorskyy initially found the spinel trade tough going. Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z Full of photographs taken by Mr. Yavorskyy, the book documents the dealer’s 20 years of travels to spinel mines in Myanmar, Sri Lanka, Madagascar, Tajikistan, Vietnam and Tanzania. Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z The 170-carat Black Prince’s Ruby, a centerpiece of the British Crown Jewels, is, in fact, a red spinel octahedron, most likely from the mines of Badakhshan. Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z Showing Roman skills with both fine and semiprecious jewels, Bulgari’s spin on spinels was to gather them with amethysts and turquoise. In Paris, Nature Meets Craft in Jewelry 2012-01-30T14:00:43Z That may explain why, for centuries, the two were considered doppelgängers — in antiquity, spinel was known as balas ruby, derived from the word Badakhshan. Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z The subtle color mixes included lilac diamonds with lavender chalcedony, purple sapphires and pink spinels. Special Report: Fashion: 3 Weddings and a Dior Carnival 2011-07-04T18:10:04Z Jewelry made with pastel-colored gems like kunzite, paraiba tourmaline and mauve spinel plays a supporting role to diamond pieces. | Chopard’s Red Carpet Collection 2013-05-15T18:59:05Z She enlisted one of Florence’s last jewelry chiselers to render the strokable fur texture on the 18K-gold Sleeping Fox ring, including the small patches between the spinels and rich garnets that form his voluptuous tail. Jewelry Designer Temple St. Clair Carr's Collaboration with Artist Nancy Lorenz 2014-10-07T04:00:00Z A passionate collector of spinel, he uses lavender and pink stones in couture pieces that he describes as “evening jewelry.” Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z After two weeks of examining the mine’s geology, Mr. Yavorskyy returned home with about 30 kilograms, or 66 pounds, of raw spinel, a stone beloved by connoisseurs but largely unknown to the general public. Special Report: Jewelry: Restoring the Luster to a Once-Loved Gem 2011-05-12T13:49:21Z As an example, production of the high-pressure spinel polymorph of Li2MoO4 was only previously achieved in a high temperature and high-pressure chamber under a pressure more than 10,000 times the pressure of Earth's atmosphere. Ball milling provides high pressure benefits to battery materials 2023-09-29T04:00:00Z The crown glitters with stones including tourmalines, white and yellow topazes, rubies, amethysts, sapphires, garnet, peridot, zircons, spinel and aquamarines. 5 things to look for during King Charles III’s coronation 2023-05-05T04:00:00Z It is made from a gold rod in three sections, mounted with diamonds, rubies, emeralds, sapphires and spinels. Factbox: The crowns, jewels, swords and spoon used at King Charles' coronation 2023-05-05T04:00:00Z These objectives earn you special “spinel” jewels to trade for rare items from the iconic undead merchant, who this time has an even heavier, cartoonish cockney accent. Review | The remake of ‘Resident Evil 4’ is like reliving a cherished memory 2023-03-17T04:00:00Z The lower mantle has a similar chemical composition, but because of the extreme pressures, different minerals are present, including spinels and garnets. Physical Geology 2015-01-01T00:00:00Z With a shimmering pale pink morganite sun at the center and a whimsical tassel of onyx and red spinels, it embodies an invigorating combination: one of chaste geometry and prismatic psychedelia. Near Japan’s Mount Asama, a Wine Bar Floats Among the Trees 2022-03-23T04:00:00Z There’s also a platinum brooch in the form of a beetle, its body glittering with diamonds and its jaws clutching a giant 7-carat blue spinel. A Tokyo Itinerary, Over-the-Top Hats and More 2019-09-13T04:00:00Z Instead of looking for whole meteorites, Heck and his colleagues sought chrome spinels, hardy black minerals found in space rocks in rock formations from China, Sweden and Russia. A 466-million-year-old space collision is still raining shrapnel on Earth 2017-01-23T05:00:00Z The ions can only flow through channels in the spinel, making it highly stable. Lithium batteries: To the limits of lithium : Nature : Nature Publishing Group 2015-10-27T04:00:00Z Whatever the reason pink sapphires, spinels, tourmalines, morganites and similar gems were used in a variety of ways by several designers. Jewelry That's Pretty in Pink 2015-04-08T04:00:00Z In true de Castellane fashion, the colorfully ornate cuff features more than 4,500 stones, including 30.59 carats of hand-cut diamonds, paired with pink and purple sapphires, emeralds, garnets, and spinels. Dior's New Jewelry Collection Interprets Couture Style Through Gemstones 2014-08-28T04:00:00Z These events are caused by an instantaneous phase transition from olivine to spinel, which would occur at the same depth and result in large stress releases observed for other deep earthquakes. [Report] Deep-Focus Earthquake Analogs Recorded at High Pressure and Temperature in the Laboratory 2013-09-19T17:56:47.773Z Garnets had been found in Africa, and even spinels; but these were genuine rubies of the highest quality, such as had hitherto only been discovered in the famous mines of Ava. The Fire-Gods A Tale of the Congo 2012-03-26T02:00:32.267Z A variety of spinel ruby, of a pale rose red, or inclining to orange. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z Sutra used 17 carats of pink and purple spinels along with 18k rose gold for its colorful, fan shaped ring. Jewelry That's Pretty in Pink 2015-04-08T04:00:00Z Examples of simple forms amongst crystallized substances are octahedra of alum and spinel and cubes of salt and fluorspar. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z The sale price is an auction world record for an Indian jewel — an imperial Mughal spinel necklace sold at Christie’s in Geneva in May for $5.2 million previously held that honor. India Ink: Taj Mahal Diamond Sets Auction Record for Indian Jewel 2011-12-16T05:51:23Z Mention has been made above of a stone frequently substituted for the true ruby, called the “spinel” or “balas” ruby. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z It is in reality a "spinel," a stone of inferior hardness and less intense color and brilliancy than the true ruby. Stories about Famous Precious Stones 2011-08-31T02:01:42.217Z Some of the alumina and iron oxide may occasionally be chemically combined, so as to form an iron spinel, or hercynite. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z This kind of twinning is especially frequent in crystals of spinel, and is consequently often referred to as the “spinel twin-law.” Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Along the rim played the fires of the spinel. A Republic Without a President and Other Stories In the artificial production of the ruby it sometimes happens that spinel crystallizes out when true Oriental ruby is expected. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z All the large historic stones which are called rubies are declared by Mr. King to be undoubted spinels. Stories about Famous Precious Stones 2011-08-31T02:01:42.217Z Rich finds of a valuable ruby, sapphire, cat’s-eye, amethyst, alexandrite or star stone, are comparatively rare; it is only of the commoner gems, such as moonstone, garnet, spinels, that a steady supply is obtained. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" Among the commonest associates of the diamond are quartz, topaz, tourmaline, rutile, zircon, magnetite, garnet, spinel and other minerals which are common accessory constituents of granite, gneiss and the crystalline schists. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" CHROMITE, a member of the spinel group of minerals; an oxide of chromium and ferrous iron, FeCr2O4. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" In this case, when these impurities have accumulated to a certain point they unite with the alumina, and spinel then separates, as it crystallizes more easily than ruby. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z Similarly, ruby can at once be distinguished from even the finest garnet or ruby spinel, as the last two are singly refracting. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Emery is an intimate mechanical mixture of corundum, magnetite, and sometimes spinel. The Economic Aspect of Geology He was dressed in a robe of silk, with white headdress on his head, on the top of which there was a spinel ruby, with pearls and precious stones round it. The Arts of Persia & Other Countries of Islam Ruby and sapphire are scratched by diamond alone, while chrysoberyl, topaz and spinel scratch all the remaining stones, although they do themselves yield to the scratch of ruby and sapphire. Scientific American Supplement, No. 1082, September 26, 1896 The spinel and ruby occur together in nature, stones from Burma being as often spinel as true Oriental ruby. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z The peculiar yellowish character of the red color led us to suspect ruby spinel. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Certain minerals, such as magnetite, ilmenite, spinel, corundum, etc., are often found as primary segregations within the mass of igneous rock. The Economic Aspect of Geology In this group may be mentioned the opal, amethyst, agate, rock-crystal, and the like, as the best known examples, whilst oxygen appears also mostly in the form of oxides, in chrysoberyl, spinel, and the like. The Chemistry, Properties and Tests of Precious Stones There are, for example, certain red stones which the most skillful experts cannot by their color alone refer with certainty to ruby, garnet or spinel. Scientific American Supplement, No. 1082, September 26, 1896 Then follows the topaz, which, with spinel and chrysoberyl, has a hardness of 8; whilst quartz falls a degree lower. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z It was therefore judged to be a red spinel. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The "rubies" of the poet's time were frequently ruby spinels, or the so-called "balas rubies" from Badakshan, in Afghan Turkestan. Shakespeare and Precious Stones Treating of the Known References of Precious Stones in Shakespeare's Works, with Comments as to the Origin of His Material, the Knowledge of the Poet Concerning Precious Stones, and References as to Where the Precious Stones of His Time Came from It is doubly refractive, whereas spinel and the diamond, which two it closely resembles, are singly refractive. The Chemistry, Properties and Tests of Precious Stones He is also lord of the mines of rubies, sapphires, and spinels. A General History and Collection of Voyages and Travels — Volume 07 Other stones of less value—such as topaz, spinel, chrysoberyl, chrysolite, zircon and tourmaline—are sometimes called “fancy stones.” Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z Thus spinel is of about the same hardness as topaz and hence is usually rated as 8 in hardness. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The dealers generally tried to sell pale spinels as pink topaz. A Holiday in the Happy Valley with Pen and Pencil Proudly did she show to her neighbours her double spinel yarn—observing, "It's nae finer than he deserves, poor fallow, for he'll pay me back some day." Wilson's Tales of the Borders and of Scotland, Volume XXIII The merchandises exported from Pegu are gold, silver, rubies, sapphires, spinels, great quantities of benzoin, long-pepper, lead, lac, rice, wine, and some sugar. A General History and Collection of Voyages and Travels — Volume 07 His earliest scientific work related to spinels and other minerals, and later he made special studies of fumaroles, of the mineral deposits around volcanic vents and of the structure of volcanoes. The Project Gutenberg Encyclopedia Volume 1 of 28 Pink spinel is without dichroism, being singly refracting. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public I saw little really fine jewellery, probably because I was obviously unlikely to be a big buyer, but many good spinels, dark topaz, and rough emeralds. A Holiday in the Happy Valley with Pen and Pencil A ring with a spinel ruby in it dropped out: she recognised the stone—it was Miss Minerva's ring. Heart and Science A Story of the Present Time But rubies, sapphires, and spinels, being productions of the country, pay no duties. A General History and Collection of Voyages and Travels — Volume 07 They were true rubies, not spinels, remember that. My Strangest Case Another mineral species which, like spinel, has just three elements in its composition is chrysoberyl. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public From certain indications I judged these stones, which might have been spinels or carbuncles, or even rubies, to be very ancient. The Ivory Child The variously colored spinels, like the various corundums, all have the same properties, thus they are all of hardness 8 or a little higher, they all have single refraction, and all have specific gravity 3.60. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Next in the order that we have chosen comes "spinel." A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Violet red spinel is sometimes called "almandine spinel." A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public First and hardest of these is spinel, then comes true or precious topaz. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The rough material persists in turbulent mountain streams where weaker minerals are ground to powder, and when cut and polished, spinel will wear well in any jewel. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The true topaz is a bit softer than spinel, and the rough crystals show a very perfect basal cleavage. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Thus the term ruby should be reserved exclusively for red corundum, and not applied to other red minerals such as garnet, spinel, etc., as is too often done. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The more valuable spinels are of a red color that somewhat closely approaches the red of some rubies. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The various spinels are very hard and tough stones. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Limestone is the usual matrix of spinel, although it is more often mined in gravels resulting from the weathering of the matrix. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Coming now to mineral species which have three chemical elements in them we may consider first spinel, which has the two metallic elements aluminum and magnesium and the non-metallic element oxygen in it. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Purple spinels are singly refracting, and lack dichroism, and hence lack variety of color. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public The garnets are, as a rule, apt to be more dense in color than the spinels. A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public |
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