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Fine Jewelry University Articles matching: “What does ci mark mean”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Amethyst
…it a durable gemstone that is resistant to scratching and chipping. It is also resistant to heat and chemicals which means that it can withstand daily wear and tear. Amethyst has the same refractive index as other varieties of quartz at 1…of amethyst dates all the way back to ancient Greek mythology. The word “amethystos,” is derived from the Greek word meaning “not drunken.” It is said that amethyst was created when Dionysus, the god of wine, was angered by an insult from…
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Diamond Buying Guide: The 4 C’s
…, you can adjust the quality of the diamond to fit. Unless you work in the jewelry trade, it can be hard to know what size you want. The photo above shows some common diamond carat weights and how they look in comparison to each other. … looking for the absence of color or transparency (except fancy color). The color grading scale starts with D meaning totally colorless and moves down the alphabet subtly increasing in body color. As you can see from the picture, the …
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Gem in the Spotlight: Alexandrite
… has been known around the world as one of the most sought-after gems for the better part of 200 years. But, what makes this stone so special? Gemology of Alexandrite Alexandrite is the extremely rare, color-change variety of a gem …’s crystal structure. It absorbs most wavelengths of light 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 …
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Gem in the Spotlight: Aquamarine
Aquamarine derives its name from the Latin which literally means “seawater,” a tribute to its beautiful blue color. As a member of the beryl family, Aquamarine has some illustrious…, the finest specimens being the deepest in color. Most aquamarine stones have a subtle green component, and in some markets, a deep greenish blue is the most desirable. Brazil is the most prolific supplier of aquamarine where it is often… refractive. Aquamarine’s specific gravity is 2.72 and it has a Mohs hardness of 7.5-8.0. For comparison, this means that it is softer than Sapphire, harder than Quartz, and similar to Topaz. This makes it a very durable stone that is …
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Star White Gold
… made gas. White gold also has three grades. Grade 3 is off white, grade 2 is standard, and grade 1 is premium. This means that when white gold is made, it can be yellowish to light yellow. When white gold rings are new they are coated … color of the white gold could actually be a light yellow color. The rhodium is very white and very hard, but it does wear away eventually. Regular, Plus, or Premium? The White Gold Task Force statement on the plating of white gold …
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Gem in the Spotlight: Pearl
…. Natural pearls grow in the wild without human intervention. They are very rare, and most natural pearls on the market today are antique. They can take years, even decades, to form, and are found only in a few select locations around the… who believed it to be a talisman of good luck. Types of Pearls There is a huge variety of pearls available on the market today. This section will give you just a small sampling of the different kinds of pearls that you may run into. …
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Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
…. They don’t set the price, just the basis to determine the price. In the final analysis, the price of a diamond is whatever two people agree it is. The easiest starting place for diamond value is carat. All carat describes is how much a … to understand, yet one of the hardest to judge. The professional education organizations also teach that a person does not have color memory precise enough for color grading. How can you to overcome the color assessment problem? Judging …
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Diamond Brokering
…hunting system makes the diamond buying experience a positive one. Please feel free to ask any questions and explore what we can do for you. Using a gemologist diamond broker to guide you through your diamond purchase insures the mastery … us. Our brokerage has links to hundreds of diamond importers, wholesalers, dealers and traders. We use high-tech means to reach the most sophisticated companies and low-tech to mine even one person operations all with the goal of finding…
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The Magic of Polarized Light
… polarized light on a daily basis when we put on our sunglasses, turn on our TV, or sit down at our computer. But, what is polarized light exactly, and why is my jeweler writing about it? It turns out that polarized light is actually a …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 passes through a polarizing filter is “polarized.” Common Uses for Polarizing Filters …
