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Fine Jewelry University Articles matching: “What does gtr mean”

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Fine Jewelry University (Show All FJU Articles)

  1. Blue Zircon loose gems and jewelry

    Gem in the Spotlight: Blue Zircon

    …Zircon colors are pure and have that distinctive fire that sets it apart from other gems. The Gemology of Zircon Why does zircon have so much more fire then other colored gems? Zircon has a high refractive index (1.92-2.01). The …heat treatments. Zircon is a durable gemstone with good hardness on the Mohs scale (6 to 7.5).  However, Zircon has what is known as indistinct cleavage which creates a somewhat brittle tendency that can lead to chips, especially along …

  2. Loose fantasy cut aquamarine

    Gem in the Spotlight: Aquamarine

    Aquamarine derives its name from the Latin which literally means “seawater,” a tribute to its beautiful blue color. As a member of the beryl family, Aquamarine has some illustrious… refractive. Aquamarine’s specific gravity is 2.72 and it has a Mohs hardness of 7.5-8.0. For comparison, this means that it is softer than Sapphire, harder than Quartz, and similar to Topaz. This makes it a very durable stone that is …

  3. A group of tanzanite loose gems and rings

    Gem in the Spotlight: Tanzanite

    …a gemstone. Tanzanite has them both. In fact, it is estimated that Tanzanite is 1,000 times rarer than diamond. But, what makes Tanzanite so popular is its color. Tanzanite’s gorgeous color is a captivating mix of blue and purple. The …. Heating removes the green component which makes the violetish blue color pop (although technically speaking it doesn’t make it more blue, just less green). The amount of blue in a tanzanite is caused by the quantity of vanadium present…

  4. The Birthstones

    …thoughts. Learn more about Amethyst March’s Birthstone: Aquamarine Originating its name from the Latin “aqua marina” meaning “sea water”, the aquamarine is a light blue to greenish blue beryl, most valuable when it’s a shade of darker … has been treasured for over 4,000 years. The name for the emerald is derived from the Greek word “smaragdos”, meaning green stone. Spring and green symbolized faith and fertility. The early Christians valued the emerald as a symbol of …

  5. Three loose rubies in a row triangle oval and pear shaped

    Gem in the Spotlight: Ruby

    For much of human history, rubies have been the most prized gemstone. But, what is it about this red gem that has captivated our hearts and minds for so long? Is it ruby’s color? It’s rarity, and …precious stones” in the ancient language of Sanskrit. Rubies get their name from the Latin word “ruber,” which means red. This is also where rubellite tourmaline (the red variety of tourmaline) gets its name. Pliny the Elder mentioned …

  6. A computer rendering of a fake diamond

    Fake Diamonds: The Great Diamond Attack

    … would try to find out who was the real person. Technology has created many new diamonds and diamond lookalikes. “What is a real diamond?” is a difficult question these days. And the problem of separating a fully natural diamond from all … uses of this man made gem are in the pipeline. The Big Bad Synthetic In the gem world we use words with particular meanings. Synthetic is one of those words. Synthetic, in the gem world, means made of the same chemicals (elements) and …

  7. Single white round pearl on white background

    Gem in the Spotlight: Pearl

    … accents in fine jewelry with many of them set together to create intricate, textured patterns. See More on Etsy › What Makes a Pearl Valuable? There are several factors that can effect the value of a pearl. Understanding these factors … a pearl or strand of pearls. Care and Cleaning of Pearls Unlike most gems, pearls are an organic creation which means that they require a little extra care to continue looking their best. With a Mohs hardness of 2.5, pearls are among the…

  8. Group of loose spinel gemstones with finished jewelry

    Gem in the Spotlight: Spinel

    … regularly for the last century, whether it is with an heirloom piece of jewelry or something found at the beach, what many people have believed to be a ruby for years turned out to be spinel. While modern technology and gemological … used hundreds of years ago in early compasses. You may even know this gem by its more common name “lodestone” which meant “leading stone,” but you may not have known that lodestone is a form of spinel. Spinel is believed to possess …

  9. Retipping is an important jewelry repair technique

    Jewelry Repair FAQ

    … quite similar to the original. So, that beautiful piece of jewelry you love can look just the way it used to again. What is retipping, and why do I need it? In a large number of jewelry pieces, the valuable diamonds and gemstones are … laser welder in the hands of our skilled craftsmen there is a good chance we will be able to repair your jewelry. What is Gold Plating? Gold plating is the process of depositing a thin layer of gold onto the surface of jewelry. This is …

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