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Fine Jewelry University Articles matching: “Red zircon”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Alexandrite
…fluorescent light, and some LED light. Under incandescent light, candle, and firelight, alexandrite appears purplish-red. This is because of how the trace element chromium interacts with alexandrite’s crystal structure. It absorbs most … has a stronger greenish-blue component, the stone appears greener. Under candlelight, which has a much stronger red/orange component, the stone will appear redder. Alexandrite has a refractive index of 1.746-1.755 with an average …
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Gem in the Spotlight: Tanzanite
… only found in one place on earth. In 2002 tanzanite was added as one of the birthstones for December alongside blue zircon, turquoise, and blue topaz. Tanzanite is believed to symbolize transformation and spiritual awakening. It is often … and how deep the color is. Less important, but still part of the equation, are the cut and clarity. As with all colored gems, the value of tanzanite comes from its color. Tanzanite has a Moh’s hardness of 6-7, making it about the same …
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Gem in the Spotlight: Topaz
… in a huge variety of colors. Some of these varieties have their own names: Imperial Topaz: When both orange and red colors are present (although much of the jewelry industry might call golden topaz imperial). Golden Topaz: Yellow to … glasses and cameras. It is also one of the processes that is used to create lab grown diamonds . A thin, multi-colored film is bonded on the surface of colorless topaz to create all the colors you see in Mystic Topaz. These enhanced …
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Alternative Metals for Men’s Jewelry
…Overall, ceramic jewelry is a great option with space-age tech for someone who wants a non-traditional wedding band. Zirconium Zirconium is a natural element which begins with a silver color. Zirconium is then heat treated and exposed which… feature in the jewelry world as most black metals are the result of plating or antiquing which fades overtime. Zirconium is currently the only permanently black jewelry that is workable enough to allow the setting of diamond or other gems…
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How to Tell If a Diamond Is Natural or Lab Grown
… as natural diamonds, but we still want to be able to tell them apart. When it comes to diamond simulants like Cubic Zirconia (CZ) or Moissanite, it is easy to identify them because they aren’t diamonds. But, with lab grown diamonds, the … to analyze gems. One such machine is the DiaTrue screener which we have recently added to our own gem lab. This incredible machine is used by some of the world’s top gem labs and jewelry manufacturers daily, and it has already helped us…
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The Magic of Polarized Light
… cut through reflections in water and glass so that we can see easier. Camera lens/filters: Polarizing lens filters reduce reflections, darken skies, and cuts out glare to help improve photo quality. Some filters can even be rotated on … to selectively see through the surface of water or only capture the reflection. Modern 3D movies: Unlike old school red and blue 3D movies, modern 3D uses two images along with a pair of glasses that have polarizing filters for lenses. …
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Gem in the Spotlight: Opal
… and blue are the most common. Typically the higher end opals have a darker body color, and a wide range of colors. Red carries more value and is by far the rarest color that opals can display. Stones with larger patches of color are … to stained glass windows. This is also a good time to discuss doublet and triplet opals. These gems are manufactured using a thin slice of natural opal. In doublets, a lapidarist will use a piece of ironstone or black onyx and glue the …
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Gem in the Spotlight: Jade
…the richest heritages of all gemstones. People have been using jade from as early as 6,000 BC, and it has been an incredibly important part of Asian, Central American, and North American history ever since. But, what is jade, and what … species, but since they have been confused for so many years, and are similar in many ways, they are both referred to by the blanket term “jade”. Both materials are silicates that have exceptional toughness, can be carved, and can be …
