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Fine Jewelry University Articles matching: “all 18k gold markings”
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Fine Jewelry University (Show All FJU Articles)
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Fake Diamonds: The Great Diamond Attack
A popular game show would have three people all say that they were someone and the contestant would try to find out who was the real person. Technology has created … is a real diamond?” is a difficult question these days. And the problem of separating a fully natural diamond from all the modern possibilities is quite demanding. So what is a real diamond? Let’s start with the older diamond look a …task with these older lookalikes. Apathy and sloppy observation can let one of the older lookalikes get by, but generally the profession is dealing with these well known simulants easily. The diamond tester (thermal inertia testers) is …
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How to Tell If a Diamond Is Natural or Lab Grown
How can I know if my diamond is real? This is a question we get all the time, and it’s not as simple as you might think. First, you have to decide what “real” means. If you are not … them because they aren’t diamonds. But, with lab grown diamonds, the chemical structure and properties are all the same as natural diamond, so it becomes much more difficult to differentiate them. Responsible Disclosure The first thing … are perfectly legitimate and honest organizations that are upfront about their products. Some even laser inscribe all of their diamonds to clearly mark them as lab grown. The Type IIa Test That said, we would still like to be able to …
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The Magic of Polarized Light
…, what is polarized light exactly, and why is my jeweler writing about it? It turns out that polarized light is actually a very useful tool in gemology, and in this article we’ll show you why. What Is Polarized Light? Light from almost … light source travels in many different directions, and the vibrations around each ray of light are random. This is called unpolarized light. In the gemological world, this would be any light source that we use on a regular basis (e.g. …
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How to Sell Jewelry on eBay and Other Websites
… get a free evaluation of the jewelry you want to sell. If you like our offer, you can get cash on the spot for your gold and jewelry, no waiting for it to sell, no photographing, describing, pricing, no hassle at all. Our gemologist …a story? You must have a way for them to buy and return without losing the money or jewelry. An escrow account is usually a good option or you can get paid first. Take a photo before you ship in case the shipper damages it or the buyer …
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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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Types of Jewelry Clasps
… by ancient Egyptians and is the oldest known clasp style. This type of clasp was often made from softer metals like gold or copper and used to fasten necklaces and bracelets. The hook-and-eye clasp was also used by the Greeks and Romans … by virtue of the strength of the wire to hold its curved shape alone. S hooks usually work best in higher karat gold (21k and higher) because they are more malleable and don’t get brittle over time as easily. Unsurprisingly, one common …
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Gem in the Spotlight: Topaz
… one person say, “I love Topaz; it reminds me of a blue sky.” Then her friend says back, “Topaz may be like a golden sunset, but not the sky.” A third friend will chime in, “You’re both crazy, it’s like a beautiful peach.” Then, a …names: Imperial Topaz: When both orange and red colors are present (although much of the jewelry industry might call golden topaz imperial). Golden Topaz: Yellow to orange without any red component (could be called precious topaz if more …
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Gem in the Spotlight: Opal
… containing the wonders of the skies, sparkling rainbows, fireworks, and lightning. Its dazzling play of color is totally unique in the gem world, and the lore that surrounds it is almost as colorful as the gem itself. Opal is the …. Opals can display just about every color of the rainbow, but hues of green and blue are the most common. Typically the higher end opals have a darker body color, and a wide range of colors. Red carries more value and is by far the …
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Laser Jewelry Repair
… type of metals can be laser welded? All the traditional metals can be laser welded, including base metals, karat gold, sterling silver, palladium and platinum, offering a complete array of design, redesigns and repair options. Platinum …When you hear laser you probably think of blowing things up (all you sci-fi people) or high tech scientific experiments or even crazy villains trying to take over the world with a “… focus and the duration of the blast of concentrated light, as well as voltage used and number of pulses per second. All this gives the master jeweler the ability to use the laser with the skill of a micro surgeon. The laser gives our …
