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Fine Jewelry University Articles matching: “Platinum men”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Ruby
… age tools in historic mines in Mogok, Myanmar. The Bible compares the price of wisdom to the price of rubies and mentions them four separate times. In India, the ruby is known as “ratnaraj” or “king of precious stones” in the ancient … means red. This is also where rubellite tourmaline (the red variety of tourmaline) gets its name. Pliny the Elder mentioned rubies in his work Natural History, including notes on their durability, which means that their physical …
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Gem in the Spotlight: Tourmaline
… to display this unique property. One of tourmaline’s most distinctive traits is its ability to be multicolored as mentioned above with watermelon tourmaline. The gemological term for this is parti-colored tourmaline. This includes bi-… other combinations of colors exist. Parti-colored tourmaline occurs when the gem is getting formed and the environment changes. Depending on which trace elements are present, as well as their concentration, different colors will be …
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How Are Lab Grown Diamonds Made?
… have claimed to have successfully synthesized diamonds. However, it was not until relatively recently that a documented and reproducible process was demonstrated. Henri Moissan was one of the early pioneers in the field. In 1893, he …the belt press, the cubic press, and the split-sphere (BARS) press. The goal of each process is to create an environment of extremely high pressure and temperature where diamond growth can occur. Each process starts with a small diamond …
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Jewelry Solder: What You Should Know
…the sake of simplicity, we will focus our discussion on gold jewelry, but the same concepts also apply to silver and platinum as well. If your ring is made out of 14 karat gold, you know that approximately 56% of it is gold with the rest … over time. Tarnishing, also called oxidization, is a result of chemical reactions between the metal and elements in the air and liquids that it comes in contact with. The result of this reaction is a new molecule that does not have the …
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Measuring Gold Weight
…, precious metals and gemstones. The name comes from the French city of Troyes. The noble metals (gold, silver and platinum) all use the troy system. A troy ounce is 20 pennyweights. The pennyweight was the weight of a silver penny in … wrong. How can this be? Tradition. Gold is not weighed in the ordinary weights. Gold is weighed in the troy measurement system. One ounce of gold is not the same as the ordinary ounce (really called avoirdupois ounce). The best way to …
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How to Value Inherited Jewelry
… diamond and gem prices are not readily available like precious metal prices are to the general public. The gold, platinum, and silver prices are well publicized. The diamond and gem wholesale trade keeps their prices confidential, so there …. Each standard prescribes a set of guidelines for determining jewelry values. The four standards are: replacement price, estate value retail, estate value wholesale, and intrinsic value. Choosing the correct value standard for the …
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Anatomy of a Ring
… know it was sized looking at the shank with your naked eye. Over time, the shank can wear thin—yes, even gold and platinum can wear away. In such cases a jeweler can “re-shank” the ring by replacing the metal at the bottom of the shank, …can actually wear through the gallery leaving the center stone at risk of calling out. This is why we typically recommend that you have your rings soldered together if you plan to wear them together all the time. When you are looking for…
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Frequently Asked Question about Jewelry
… is redesigned jewelry or redesigned? Simply put, a redesign is a custom design using your existing gems and gold or platinum. This does not mean you are limited by the gems you have, but what you have is incorporated into the new design. You…? A gemologist is one who studies gems and jewelry scientifically, who knows and identifies them, can judge the elements and their beauty and value, and can apply this knowledge. This training and experience combine to make a gemologist…
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Gem in the Spotlight: Emerald
… by Mr. and Mrs. O. Roy Chalk in 1972 and can be 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 …add character and uniqueness to the stone. At this point in history, almost every emerald has had some level of treatment to make the fractures less visible. It is so common that if the stone doesn’t have a report from a reputable lab (…
