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Fine Jewelry University Articles matching: “Good chains”
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Fine Jewelry University (Show All FJU Articles)
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The History of Diamond Cuts
… diamonds and jewelry not add to the confusion. The Mazarin cut has 17 facets on the crown. Yet another name for this cut is the double-cut brilliant because they have double the facets of the single cut diamond. And if double is good, then triple is even better. The Triple cut or Peruzzi brilliant cut is another adaptation. The triple cut has 33 facets on the crown. The Old Mine and Old European Cuts When most people think of old diamond cuts they think of the Old Mine…
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How to Tell If a Diamond Is Natural or Lab Grown
…diamond that relates to how pure the carbon is that makes up the diamond. In nature, less than 2% of all diamonds are Type IIa, however, most gem quality lab grown diamonds are Type IIa. So, if a diamond is Type IIa, that’s a pretty good indication that it is lab grown. However, like any gemological test, the Type IIa test is only an indicator for the gemologist to use. There are lab grown diamonds that are not Type IIa, and there are natural diamonds that are Type IIa…
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Fake Diamonds: The Great Diamond Attack
…created equal. Nature makes some diamonds so beautiful it will take your breath away. Other diamonds should we say are unappealing to down right ugly. Now if science could take a ugly cheap diamond and perform some magic and make it a good looking diamond that would be something. It might not be magic but some companies now have the ability to change ugly into nice diamonds. Exactly how the companies are doing this process is a closely guarded secret. But the theory is …
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Gem in the Spotlight: Blue Zircon
…, the name never caught on, and today we use the simpler term, Blue Zircon. Zircon is commonly heat treated. Brown zircons can be transformed into colorless or blue zircons through heat treatments. Zircon is a durable gemstone with good hardness on the Mohs scale (6 to 7.5). However, Zircon has what is known as indistinct cleavage which creates a somewhat brittle tendency that can lead to chips, especially along facet edges requiring extra care when setting, cleaning, …
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Gem in the Spotlight: Spinel
… made in 2016, but only in the last couple of years have we started to see the majority of the industry get on board. If you know someone born in August, it’s time to get excited. Gemology of Spinel With a Moh’s hardness of 8 and good toughness spinel is a great choice for all forms of jewelry. We recommend occasional wear for rings and bracelets, but earrings and pendants are suitable for daily wear. Spinel can come in virtually any color of the rainbow which is one of…
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Anatomy of a Ring
… up more of the stone. Prongs, like shanks, can wear away and need to be built up to prevent the stone from falling out. The very top of the prong—the part that actually rests on top of the stone—is called the “tip.” It’s always a good idea to have your prongs checked by a jeweler, especially if it looks to you like any of the tips are missing or worn down, or if any stones are loose. The more tips that are thin or missing, the more likely you are to lose a stone. In …
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What Are Lab Grown Diamonds?
…CZs are very often, mistakenly, referred to as synthetic diamonds. Synthetic Moissanite also creates some confusion. It is a man-made, synthetic gem that actually has some diamond-like properties. For example, diamonds are especially good at transferring heat, and so is Moissanite. This is important because the most popular diamond testers use heat dispersion to test if a gemstone is a diamond. However, Moissanite has a completely different chemical structure than …
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Gem in the Spotlight: Jade
… long as 10 years and a team of 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 …
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Gem in the Spotlight: Ruby
… and residue that will mar its sparkle. For more intense cleaning, use warm water and mild dishwashing detergent in solution. Soak the piece for 15 minutes, and then clean with a soft brush. Rinse with clear water and examine under good light for any remaining residue. If there is any, repeat the process. You can use an ultrasonic cleaning machine with rubies, but use caution as these machines can cause loose gems to come out of their settings. Remember to dry your ruby…
