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Fine Jewelry University Articles matching: “used rolax”
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Fine Jewelry University (Show All FJU Articles)
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Jewelry Repair FAQ
… that is quite similar to the original. So, that beautiful piece of jewelry you love can look just the way it used to again. What is retipping, and why do I need it? In a large number of jewelry pieces, the valuable diamonds and gemstones… those molecules to the jewelry’s surface. Molecules are the key to understanding gold plating. The amount of gold used is on the molecular level. This means that only a very thin layer of gold covers the surface. Gold plating produces a …
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Gem in the Spotlight: Iolite
… appears to be different colors when observed at different angles, especially with polarized light. Pleochroism is caused by differing absorption of light rays in doubly refractive crystals. Thus, no singly refractive gemstone can exhibit…of transmitted light depending upon its crystallographic orientations. Iolite is one of the most pleochroic gemstone used today. It is iolite’s pleochroism that led to its most important historical use. Vikings used iolite slices to …
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Gem in the Spotlight: Pearl
… itself. This creates a flat, rounded pearl that has a distinctive shape and appearance. Mabe pearls are typically used in jewelry designs that require a flat surface, such as earrings, pendants, and rings. Seed Pearls: These are very … resemble the size and shape of a seed. They are formed in the same way as larger pearls only a smaller nucleus is used. They are traditionally used as decorative accents in fine jewelry with many of them set together to create intricate…
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Gold Purity and The Differences Between White and Yellow Gold
… the most malleable and pliable of all metals. Yes, but what does that mean to me? Gold is a beautiful metal that is used to make timeless jewelry. Gold can be bent and molded into elegant engagement rings to show the eternal affection of… the same? We hear a piece of jewelry is pure gold or solid gold or 24 karat gold, but what does it all mean? Gold used in jewelry like wedding rings can come in many forms. Basic to understand the uses of gold in jewelry is karat. Karat …
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The Birthstones
… Garnet February’s Birthstone: Amethyst Amethyst, transparent purple quartz, is the most important quartz variety used in jewelry. Purple has long been considered a royal color so it is not surprising that amethyst has been so much in …shade of darker blue. Sailors often wore amulets of aquamarine to give them courage and tame the sea. Aquamarine was used to bring happiness, eternal youth, and control passion. In ancient times the aquamarine was believed to instill …
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Gem in the Spotlight: Opal
… refractive index of 1.37 – 1.47 and a Mohs hardness of 5.5-6. This makes it one of the softest gemstones commonly used in jewelry. For reference, here are the Mohs hardness values for some other gemstones you may know: Diamond 10, … 6. Turquoise is about as hard as opal, but you would need to consider Pearl or Amber (both 2.5) to find a commonly used gem that is softer than opal. Common Opal Treatments There are several different treatments that can be applied to …
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Gem in the Spotlight: Quartz
… alongside “Herkimer Diamonds” (see below). In recent times, the term “Green Amethyst,” which was commonly used for Prasiolite, has come under fire. It even attracted the attention of the US Federal Trade Commission which effectively … are compared to each other. Crystal Name Color Chalcedony Any cryptocrystalline quartz, although generally only used for white or lightly colored material (otherwise more specific names are used) Sard Reddish-brown chalcedony Sardonyx …
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The Difference Between White Gold and Platinum
… platinum is typically an alloy containing 90% to 95% platinum and the balance alloy. Iridium or ruthenium is often used as a hardener alloy. Platinum is usually marked with .900 or .950 to mark its fineness. Some manufacturers state what… usually coated with a hard protective finish of rhodium, a silver-white metal like platinum. The rhodium plating is used to make the white gold look more white. The Rhodium is very white and very hard, but it does wear away eventually. …
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Gem in the Spotlight: Topaz
…” for an island in Foul Bay, Egypt (now called Zabargad). Of course, topaz isn’t found there, but the island used to be a source for peridot which was confused with topaz before modern gemology. In ancient times, topaz was believed to … Topaz. An electron bombardment in a linear accelerator results in the light Sky Blue Topaz. If both treatments are used, they produce Swiss Blue Topaz. Determining where one color ends and the next color begins is always a difficult call…
