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Fine Jewelry University Articles matching: “Gold FL”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Alexandrite
… the extremely rare, color-change variety of a gem species called Chrysoberyl. It appears bluish-green in daylight, fluorescent light, and some LED light. Under incandescent light, candle, and firelight, alexandrite appears purplish-red… very well, only transmitting green and red light. This means that depending on the light source the stone will reflect more of the accent colors of light. Since fluorescent light has a stronger greenish-blue component, the stone …
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Gem in the Spotlight: Aquamarine
… but this tiara she special ordered from Garrard in 1957. The Gemology of Aquamarine Like emerald, aquamarine is a member of the beryl family (along with morganite, heliodor, and others). Unlike emerald, it is frequently free of flaws and often occurs in large crystals. Aquamarine’s main pigment comes from iron. The color spectrum of aquamarine varies from very pale blue to a deep blue, the finest specimens being the deepest in color. Most aquamarine stones have a …
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Gem in the Spotlight: Opal
…, making it susceptible to scratches and damage from sharp impacts. Household chemicals and extreme temperature fluctuations can also harm opals, so gentle care is essential. To keep opal at its luminous best, wiping it clean with a … body color, many of these stones have little to no play of color. The best stones have strong greens and blues that flash through the orange body color. Boulder Opal: Boulder opals are gem opal material that still incorporates some of …
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Gem in the Spotlight: Blue Zircon
… color. But, zircon can be almost any color you can imagine including red, yellow, orange, brown, green, champagne, golden, saffron, and colorless. Zircon colors are pure and have that distinctive fire that sets it apart from other gems. … of zircon was used in jewelry to mimic diamond. Why? Natural zircon is known for its scintillation, brilliance, and flashes of color or fire just like diamond. Zircon also is known for its variety of colors. Blue zircon is the most …
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Gem in the Spotlight: Pearl
… are grown against the inside shell of a mollusk, rather than within the body of the mollusk itself. This creates a flat, rounded pearl that has a distinctive shape and appearance. Mabe pearls are typically used in jewelry designs that …pearls are those with a pure, even color, such as white, pink, or silver. Luster: Luster is the intensity of light reflected from a pearl’s surface. Pearls with excellent luster have sharp bright reflections on the surface. Pearls with …
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Gem in the Spotlight: Jade
…up to 50 carvers to make. Because of the incredible detail, many of these centuries old carvings are still unmatched in quality to this day. Across the world, jadeite symbolizes prosperity, success, and good luck. The traditional jade flat disc with a hole in the middle, known as a “bi,” symbolizes heaven. Gemology of Jadeite and Nephrite Gemologically speaking, nephrite and jadeite are two different gems, with different refractive indices and chemical makeups. Both …
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What Are Lab Grown Diamonds?
… nature made a given gem. Lab grown diamonds, on the other hand, are made in a controlled environment. They have signs of a regulated process that is not like nature. Furthermore, human efforts are not perfect and they leave their own flaws and clues that humans made a given gem. The types of inclusions and subtle variations in crystal structure are one of the main ways to differentiate between lab grown and natural diamonds. You can also learn more about how to tell …
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What are “Blood Diamonds”?
Conflict diamonds are diamonds illegally traded to fund conflict in war-torn areas, particularly in central and western … 2000, the global diamond industry made clear to the international community its zero tolerance policy towards conflict diamonds. Dedicated to eradicating the trade in conflict diamonds, it worked closely with the United Nations, …to create the Kimberley Process Certification System. This system was formally adopted in 2003 and guards against conflict diamonds entering the legitimate diamond supply chain. The diamond industry also adopted a voluntary System of …
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Gem in the Spotlight: Tsavorite Garnet
…nomenclature of gemstones follows certain rules, and according to modern mineralogical methods, gemstones are given a name which ends in “-ite”. In honor of the Tsavo National Park where it was discovered and the Tsavo River which flows through it, the gem received the name Tsavorite. It is also less commonly referred to as Tsavolite. Mythology and Lore Unlike many of the other gemstones we write about, Tsavorite does not have a rich history or lore, given its recent …
