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Fine Jewelry University Articles matching: “gold value”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Tourmaline
… wrapped in silk and placed on the cheek of a feverish child would help them fall asleep. The gem was also highly valued by alchemists who, perhaps because of its pyroelectric effect, believed it to be related to the Philosopher’s Stone. … the power to grant enlightenment, give power over spiritual affairs, reconcile opposites, and change base metals to gold. Tourmaline has a special place in our hearts as California natives because it is one of the few gems that are found…
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Gem in the Spotlight: Tanzanite
… is a strong green component at any angle, then it likely has not been heated. The main factors that influence the value of tanzanite are its hue and how deep the color is. Less important, but still part of the equation, are the cut and … tanzanite in the world. The tiara also contains 913 diamonds and 803 tsavorite garnets all set in 18 karat white gold. It is owned by former Apple CEO Michael Scott who routinely loans it out for display at museums. Care and Cleaning of …
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Styles of Earring Backs
… put in and take out. CONS Losing an Earring – The backless style is not as secure as lever backs or other similar styles Irritant – If used with costume jewelry made of non-precious metals, it may cause irritation to sensitive skin. Gold options found on more valuable jewelry do not typically have this problem. Lever Backs (European Backs) Lever backs, sometimes called European backs, have a curved ear wire instead of a straight post, and have a hinged lever piece that…
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Anatomy of a Ring
… add or remove metal from the bottom of the shank when sizing a ring. This can sometimes be done so well that you would never 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, going as far up the sides as the design and the extent of the wear require. If you are careful with your rings…
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How Are Lab Grown Diamonds Made?
The dream of making a beautiful and valuable diamond from simple carbon has long captivated the imagination of scientists and visionaries alike. Just like the alchemists of old who sought to turn lead into gold, many have tried to achieve this impressive feat. We have only recently been able to produce gem quality, lab grown diamonds that are large enough to be used in jewelry. But, how is it done? Early Efforts Throughout history, many …
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Gem in the Spotlight: Emerald
…Gemology of Emerald Emeralds are a member of the beryl mineral family (along with morganite and aquamarine) and are valued for their rich green color. The intensity of an emerald’s hue depends on the presence of chromium and vanadium in … and Cleaning of Emerald Like all precious gemstones, emeralds require proper care to maintain their brilliance and value. Emeralds are relatively durable, but they can be susceptible to damage from heat, chemicals, and extreme temperature…
