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Fine Jewelry University Articles matching: “Ring stamped with letter u and an arrow”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Alexandrite
…candle, and firelight, alexandrite appears purplish-red. This is because of how the trace element chromium interacts with alexandrite’s crystal structure. It absorbs most wavelengths of light very well, only transmitting green and red … much stronger red/orange component, the stone will appear redder. Alexandrite has a refractive index of 1.746-1.755 with an average birefringence of .010. It has a specific gravity of 3.73 and a Mohs hardness of 8.5. Because of its high …
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Gem in the Spotlight: Topaz
… crazy, it’s like a beautiful peach.” Then, a passerby contributes, “You all are nuts, it’s like a rainbow with all the colors at once.” And of course, all of them are right. History and Lore Topaz in its pure form is naturally colorless… 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 protect its wearer. Topaz was also thought to …
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Gem in the Spotlight: Garnet
… stone. January babies born in the midst of cold, white (valley fog) and at times stark surroundings are rewarded with one of the most varying birth gemstones…Garnet. Garnet’s pizzazz energizes the gloomiest day. Garnet varieties …lore surrounding garnets is that it protects the wearer from nightmares, promotes long-lasting love, and prevents hearing difficulties. It was also a charm against the effects of anger and said to be a calming influence. Some promoted it …
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How to Tell If a Diamond Is Natural or Lab Grown
… it’s not as simple as you might think. First, you have to decide what “real” means. If you are not familiar with lab grown diamonds, you might want to check out our introduction to lab grown and synthetic diamonds before continuing with … simulants like Cubic Zirconia (CZ) or Moissanite, it is easy to identify 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 …
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Understanding the Diamond Buying Game
…years. Before that system every business and diamond seller had their own system. It was impossible to buy a diamond without seeing it first. The GIA four C system is supposed to be an agreed upon grading standard but in reality this is … unique. Diamond reports don’t tell the whole story. First, it is well known that not all diamond grading labs grade with the same standard. GIA and AGS use the most technical standards. EGL uses a looser grading standard, I call market …
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Gem in the Spotlight: Iolite
… be near the top of the list. Iolite’s color range of blue, blue-violet, and violet competes for public attention with sapphire, tanzanite, and amethyst. They may have name recognition, but iolite has a rich, unique color and great gem …optical phenomenon in which a substance 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…
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Laser Jewelry Repair
… up (all you sci-fi people) or high tech scientific experiments or even crazy villains trying to take over the world with a “laser”. One of the last things you think a laser can do is to work on your intricate jewelry. Well, laser … Arden Jewelers has a powerful laser to repair our customer’s jewelry. Lasers can repair an antique enameled pin without damaging the enamel or leaving visible signs of the restoration work. Our laser can fix jewelry without removing the …
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What are “Blood Diamonds”?
… policy towards conflict diamonds. Dedicated to eradicating the trade in conflict diamonds, it worked closely with the United Nations, governments and non-governmental organizations (NGOs) such as Global Witness and Partnership Africa … 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 Warranties to assure …
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Diamond Buying Guide: The 4 C’s
… diamond shapes. There are many more shapes than we can list here and there are even variations on the common shapes with more facets or different facet patterns. When you are choosing a diamond shape, keep in mind that different shapes … to the viewer which makes them sparkle more than other shapes. The emerald cut, for example, gives a classic look with big flashes of light but very little sparkle or fire. Ultimately, it’s up to you to pick the shape that you like best…
