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Fine Jewelry University Articles matching: “ruby”
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Fine Jewelry University
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Gem in the Spotlight: Opal
…protective and healing properties, guarding against disease and enhancing one’s eyesight. Pliny, a prominent Roman scholar in the first century AD, eloquently described opal like this: “For in them you shall see the living fire of the ruby, the glorious purple of the amethyst, the sea green of the emerald, all glittering together in an incredible mixture of light.” During the Middle Ages, opal gained an interesting reputation for preserving blonde hair and was believed …
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Alternative Metals for Men’s Jewelry
… chemical symbol “W”. The “W” comes from its earlier name, wolfram. Tungsten has a high melting point at an astounding 6,191 degrees Fahrenheit. Tungsten is rated at about a 9 on the Mohs scale of hardness which is the same as Ruby or Sapphire and just below diamond (which is 10). Like these gems, tungsten is very scratch resistant and will not bend out of shape, but it will break if enough shock or pressure is applied to it. Tungsten is a dense metal which is what …
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Gem in the Spotlight: Tanzanite
…, but still part of the equation, are the cut and clarity. As with all colored gems, the value of tanzanite comes from 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 was originally discovered in 1967 in Tanzania, near Mount Kilimanjaro, by a Maasai tribesman named Ali Juuyawatu, …
