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Fine Jewelry University Articles matching: “tanzanite with diamond ring”
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Fine Jewelry University (Show All FJU Articles)
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The Difference Between White Gold and Platinum
… by a careful choice of the alloying metals, which bleach the deep yellow of pure gold. The amount of alloy mixed with gold is called its karat. The key to understanding gold karat is the karat value over 24. An example is a 14-karat gold…% platinum and the balance alloy. Iridium or ruthenium is often used as a hardener alloy. Platinum is usually marked with .900 or .950 to mark its fineness. Some manufacturers state what alloy they are using like 90% Platinum 10% Iridium…
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The Magic of Polarized Light
…refractive gems are sapphire, tourmaline, and moissanite. These are contrasted with singly refractive (SR) gems like diamond that only bend light in one direction. Gemologists use the term birefringence to refer to how doubly refractive a … and our day-to-day lives. We hope you enjoyed this article, and remember that if you are in the market for a new diamond or gemstone our trained gemologists have the tools, understanding, and experience to help find the … polarizing filter. These filters have a coating on them applied in such a way that all of the molecules are aligned with each other so only a certain vibrational direction of light can pass through. This means that all of the light that …
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Gem in the Spotlight: Pearl
… Taylor. During Taylor’s ownership, the pearl was set into a necklace designed by Cartier, which also included diamonds and rubies. The La Peregrina pearl is one of the largest and most perfectly symmetrical natural pearls in existence. It …the lighting and angle. One of the most interesting things about the Hope Pearl is its connection to the famous Hope Diamond. It is believed that the Hope Pearl was once part of a larger piece of jewelry that also included the Hope Diamond, …
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Art Deco vs. Art Nouveau Style Jewelry
…art. Many Art Nouveau jewelry pieces were made in silver, but white gold and platinum were quite common as well. The diamonds used in Art Nouveau jewelry were typically Old Mine cuts, but Old European cut stones were also included as they … and the Machine Age. Precious metals like platinum and white gold alongside rare and valuable gemstones such as diamonds, emeralds, and sapphires, were the materials of choice for Art Deco jewelry makers. The most prevalent diamond cut …
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Gem in the Spotlight: Emerald
… celebrities have had a fondness for emeralds for many years. Elizabeth Taylor received a 23.46 carat emerald and diamond pendant/brooch from her future husband Richard Burton during the shooting of Cleopatra . She wore the emerald on her … seen on display at the National Museum of Natural History in a platinum and gold ring surrounded by 60 pear-shaped diamonds. According to workers at the Muzo mine in Columbia, it is one of the finest green emeralds ever discovered Care and …
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How to Sell Jewelry on eBay and Other Websites
… of your jewelry especially a nice gem because they could return it with a different gem (they could switch the diamond with a lower grade or even a CZ and claim that is what they got). If you use eBay, you have to be found, do the research … a detailed description, or light beautiful statement, or a story? You must have a way for them to buy and return without losing the money or jewelry. An escrow account is usually a good option or you can get paid first. Take a photo …
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Star White Gold
… white is your white gold? Style, fashion, and beauty are all reasons to choose white gold. White gold compliments diamonds. White gold is bright. White gold has a pure reflexive look. White gold is white…or is it? White gold can be … above 32 on the Yellowness Index falls outside the “white gold” definition. Now don’t think after learning the diamond‘s four C’s you must learn the white gold grading chart. It won’t help learning the chart unless you have x-ray eyes. You …
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Gem in the Spotlight: Opal
… commonly used in jewelry. For reference, here are the Mohs hardness values for some other gemstones you may know: Diamond 10, Sapphire 9, Amethyst 7, and Peridot 6. Turquoise is about as hard as opal, but you would need to consider Pearl or… birthstone for those lucky enough to born in October, and it is found in a huge variety of colors (sometimes all within the same stone). Gemology of Opal Opal’s captivating dance of colors is a result of its unique internal structure. …
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Gem in the Spotlight: Spinel
…, it should be treated and stored with care. Its Mohs hardness of 8 puts it on par with Topaz. It’s softer than diamond or sapphire but harder than quartz, tourmaline, and peridot. With proper care there’s no reason why a piece of spinel … the title of an action movie, but it could also be the title of this article. For years spinel has been confused with other gems and even today is often used as a substitute for similar looking stones. In recent years, spinel has started…
