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Showing all results for: “Transparent”
Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Spinel
… index of 1.728. In recent years, scientists have developed new techniques to synthesize sheets of optically transparent spinel. This amazing material has applications in high-energy lasers, transparent armor, and missile guidance systems. It …
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Gem in the Spotlight: Morganite
Morganite is a beautiful, soft pink gemstone and a graceful expression of elegance. It is not a very well-known gem, but it definitely should be. It is pastel or pale in color by nature and known for its transparent peach-pink hue though it also occurs as soft pink, violet-pink, or pale salmon. It is the subtle, understated nature of Morganite’s color that sets it apart from many of the more popular gemstones. Morganite has an impressive family …
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Gem in the Spotlight: Quartz
… Yellow to reddish orange to brown, greenish yellow Prasiolite Green (often mistakenly referred to as Green Amethyst) Rock Quartz Clear Rose Quartz Various shades of pink, typically has a smooth, milky or hazy appearance Smoky Quartz Transparent brown Morion Dark-gray or black crystal quartz Rutilated Quartz Typically colorless and can have black or gold needle inclusions Ametrine Purple and yellow/orange color zoning (a combination of “Amethyst” and “Citrine”) Bi-color Quartz…
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Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
… color grading. How can you to overcome the color assessment problem? Judging diamond color is actually looking for the absence of color or transparency (except in fancy color diamonds). A letter grade starting with “D” means totally transparent. The scale then moves down the alphabet to the next level of less transparency color. D to F are colorless grades, G-J are near colorless, K-M faint yellow on down the scale to more inner color. Colorless is also called white. The key …
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Gem in the Spotlight: Jade
… many different colors including pink, purple (often called lavender jade), blue, black, white, and the most valuable/desirable color: a vibrant green. The finest of all green jadeite colors is a saturated emerald green that is almost transparent, and it is called “Imperial Jade.” Jade is one of the top selling gems in Asia, but its beauty and cultural importance have landed it a spot as one of the most important items in the global gem market. In fact, jadeite is often sold …
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Gem in the Spotlight: Iolite
… to reduce glare when checking the sun’s position. The Vikings, according to Norse legend, used iolite called “The Viking Stone” as a polarizing filter to help them find the sun on cloudy days. They may have used a clearer, more transparent variety of the gemstone for this purpose. On a cloudy day, without being able to see the sun, iolite was used to find north. This phenomenon can still be observed today. However, if you ever need to find north, I would recommend a different…
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Fancy Color Diamonds
… can be from very light almost Z color to almost black. The point where a gray becomes a black can be something of a gray area. Grey diamonds in the right jewelry design create a unique work of art. Black Black diamonds are opaque not transparent. Black diamonds are one of the least expensive of the fancy color diamonds. Black diamonds make for strong contrast in jewelry, and they create a wonderful texture to the jewelry item. Brown Brown diamonds are widely available. Brown …
