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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Opal
… can be applied to opals to alter their appearance. By far the most common is “sugar” or “smoke” treating a white opal to give it a darker body color. This is a simple treatment that involves placing the stones in a sealed environment … are porous by nature, so small particulates can be absorbed, if the stones are subjected to them for long enough. A white opal can be darkened to have a gray body color, and gray opals can be darkened to have a black body color. A …
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Gem in the Spotlight: Tanzanite
… faceted 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 … tanzanite is sometimes marketed as “mermaid tanzanite” because of the iridescent blue and green colors. You can usually tell if a tanzanite has been heated by using a dichroscope. This is a tool that gemologists use to separate the …
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The Birthstones
January’s Birthstone: Garnet January babies born in the midst of cold, white (valley fog) and at times stark surroundings are rewarded with one of the most varying birth gemstones, Garnet. …gem of the sun”. It was believed that peridot could chase away evil spirits and dissolve curses but only when set in gold. Care should be taken to protect peridot from scratches, sharp blows, household chemicals and extreme temperature … November’s Birthstones: Topaz and Citrine Topaz symbolizes good fortune and longevity. According to legend, this golden stone possesses the power to cure many diseases. Citrine, a transparent yellow quartz gem many of the best of which …
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Caring for and Cleaning Your Jewelry
… use chlorine or products that contains it. Don’t use a hard toothbrush because they tend to scratch the metals (gold, platinum, etc.). Abrasive cleaners and toothpaste or toothpowder will also scratch the metals. This will take away the …Hardness is related to the Mohs hardness scale. Diamond is the hardest at 10. Talc is listed as 1 the softest. Pure gold (24 karat) is Mohs 2.5, 14 and 18 karat list at Mohs 3. Platinum list at Mohs 4.33. Sterling silver list at Mohs 2.5…
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Gem in the Spotlight: Jade
… green. Jadeite can come in many different colors including pink, purple (often called lavender jade), blue, black, white, and the most valuable/desirable color: a vibrant green. The finest of all green jadeite colors is a saturated … 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 has given it such a prominent place in human …
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Gem in the Spotlight: Pearl
…iridescent rainbow colors that shimmer on or just below a pearl’s surface). Pearls come in a range of colors, from white to black, with many shades in between. The most valuable pearls are those with a pure, even color, such as white, pink…. Over time, layer upon layer of nacre is deposited around the irritant, eventually forming a pearl. This process can occur naturally or via human intervention. Natural pearls grow in the wild without human intervention. They are very …
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Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
… grades, G-J are near colorless, K-M faint yellow on down the scale to more inner color. Colorless is also called white. The key to judging color is a master. Master sets cost a lot of money and only make sense for the diamond professional… the 4 C’s of Diamonds The value factors of a diamond are like anything else, supply and demand, but when you can carry a million dollars worth in your pocket the standards to evaluate diamonds are extremely exciting. The four C’s of …
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The History of Diamond Cuts
… brilliant cut is a product of math and science. Marcel Tolkowsky analyzed diamond brilliance in the way they take white light and break it into its spectral hues and direct it to impress the wearer. Tolkowsky’s calculations serve as the …while polishing is making the facets smooth and shiny. Diamonds are cut and polished in one step. Since only diamond can cut diamond, the diamond cutter must take care to polish the gem at the same time. That is one of the reasons …
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Brands and Designer Jewelry
… jewelry must meet the most stringent of quality standards. Jewelry brands must use quality metals (like high-karat gold and platinum), first-rate gems, and highly skilled jewelers to meet their obligation. Status When a jewelry brand … want to wear it. It is important that a jewelry brand changes to avoid becoming dated. Some jewelry designers can adapt, others cannot. When a designer brand cannot keep up with the times, they simply fade away and become less relevant…
