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Fine Jewelry University Articles matching: “Sapphire and diamond-ring”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Aquamarine
…ravity 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 suitable for regular wear. But, care should… cousins in addition to a rich history of its own. The Mythology of Aquamarine Long associated with tranquility and happiness, aquamarine was also thought to instill courage, cure laziness, and sharpen the intellect. The ancient Greeks …
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Gem in the Spotlight: Tanzanite
…, even with its rarity and dynamic look, tanzanite is still less in price than more commonly known gems like rubies, sapphires, and emeralds. Gemology of Tanzanite Gemologists refer to this gem as blue zoisite. The vast majority (current … its color. Tanzanite has a Moh’s hardness of 6-7, making it about the same hardness as quartz, softer than ruby, sapphire and emerald and hard than opal. Tanzanite has a refractive index of 1.69-1.70. History and Lore of Tanzanite Tanzanite …
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The Magic of Polarized Light
… (DR) and they will split incoming light in multiple directions. Some common examples of doubly refractive gems are sapphire, tourmaline, and moissanite. These are contrasted with singly refractive (SR) gems like diamond that only bend light … 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 very useful tool in gemology, and …
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Gem in the Spotlight: Amethyst
… durability with a Mohs hardness rating of 7. For reference, amethyst is roughly as hard as tourmaline, softer than sapphire and topaz, and harder than opal and tanzanite. This makes it a durable gemstone that is resistant to scratching and …Amethyst is known for its beautiful purple color, and it is the most important quartz variety used in jewelry. Purple has long been considered a royal color, so it is not… in so much demand throughout history. Gemology Amethyst is a variety of quartz that is colored by the presence iron and aluminum. The violet color of amethyst can range from a pale lavender to a deep, dark purple, and it is often found …
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Gem in the Spotlight: Emerald
… of chromium and vanadium in the crystal structure. Emerald’s Mohs hardness rating is 7.5-8 making it softer than sapphire and harder than amethyst and other quartz varieties. The refractive index of emerald ranges from 1.57 to 1.58, making …Springtime exudes life, full of bright colors and renewed energy. Emerald, May’s gemstone, captures this enthusiasm for life in rich elegance. This precious gemstone … that are visible to the naked eye. These inclusions are not necessarily considered flaws but rather add character and uniqueness to the stone. At this point in history, almost every emerald has had some level of treatment to make the …
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Gem in the Spotlight: Opal
…used in jewelry. For reference, here are the Mohs hardness values for some other gemstones you may know: Diamond 10, Sapphire 9, Amethyst 7, and Peridot 6. Turquoise is about as hard as opal, but you would need to consider Pearl or Amber (…Opal has been described as 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 … internal structure. This gemstone is composed of tiny silica spheres arranged in a pattern, which diffract light and create the spectacular play of colors known as opalescence . The colors seen in an opal depend on the size and …
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Gem in the Spotlight: Quartz
… is known for its durability with a Mohs hardness rating of 7 (harder than opal and peridot but softer than topaz or sapphire). This makes it a fairly hard gemstone that is resistant to scratching and chipping. It is also resistant to heat …What is common and yet rare? What is well known but surprising? What is affordably priced sometimes and sometimes unattainably …The most important reason for this variety is that quartz comes in 3 main forms: macrocrystalline, microcrystalline and cryptocrystalline. Within each of these broad categories, the different colors of the gemstone are given different …
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How Are Lab Grown Diamonds Made?
… lab grown diamonds. For decades, manufacturers of synthetic gemstones tried growing diamonds like they grew rubies, sapphires, and emeralds. It failed. Then they had the idea to grow diamonds in the lab like they grew in nature. High …The dream of making a beautiful and valuable diamond from simple carbon has long captivated the imagination of scientists and visionaries alike. Just … claimed to have successfully synthesized diamonds. However, it was not until relatively recently that a documented and reproducible process was demonstrated. Henri Moissan was one of the early pioneers in the field. In 1893, he claimed …
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Caring for and Cleaning Your Jewelry
… Jewelry A diamond’s spectacular beauty is due to its light show. Diamonds make light reflect, show its many colors, and dazzle. To perform its magic the diamond must be clean. Diamonds are grease magnets. They will pull the oil from … and dirt stick to the grease and oils creating a lifeless diamond. Cleaning your diamond jewelry at home is simple and rewarding. Use a soft toothbrush and mild soap then rinse thoroughly with warm water. The key to diamond cleaning is …
