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Fine Jewelry University Articles matching: “pear cut”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Opal
… 10, Sapphire 9, Amethyst 7, and Peridot 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 … doublets, a lapidarist will use a piece of ironstone or black onyx and glue the fragile piece of opal to it before cutting and leaving them glued together after the fact to be set into jewelry. In triplets, that thin piece of opal is …
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Gem in the Spotlight: Amethyst
… be synthetic. This is a fairly recent discovery as many low cost, high quality, deeply colored amethysts are now appearing in inexpensive jewelry. Because the cost of testing is higher than the cost of even the natural stones it is not …
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The Magic of Polarized Light
…looking at the facet junctions on a moissanite. When looking through a microscope two images of the facet junction appear. This is because the stone has a high birefringence (i.e. a high amount of double refraction). When you hold a … of the images disappears; as you rotate the polarizing filter the current image disappears and the second image appears. This is because the two images are transmitted at different angles, and the polarizing filter only allows one angle …
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Gem in the Spotlight: Tanzanite
… value of tanzanite are its hue and how deep the color is. Less important, 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 … inspired by the second-highest peak of Mount Kilimanjaro. The Mawenzi Tanzanite is expected to stay in Tanzania for cutting and polishing, with the best pieces eventually showcased at the Tanzania National Museum. The Queen of …
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Diamond Buying Guide: The 4 C’s
…. Cut The Cut of a diamond has two main components. First, cut refers to the shape of the stone. Round, marquise, pear, oval, square, princess all describe the shape of the diamond. Checkout the picture above to see examples of the most … to you. Also, keep in mind that the color of the metal you set your diamond in will have a big impact on how it appears. If a diamond is in the colorless range (D-F), and it’s set in yellow gold, it may appear to be much more yellow than…
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Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
… C’s has two components. The first component is simple. The cut can refer to the shape of the stone. Round, Marquee, Pear, Oval, Square, and Princess all describe the shape of the gem. Round diamonds are by far the most popular cut in … dollars worth in your pocket the standards to evaluate diamonds are extremely exciting. The four C’s of carat, cut, color and clarity determine a common comparison. They don’t set the price, just the basis to determine the price. In the…
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Gem in the Spotlight: Emerald
… known for its clarity and rich green color. It was donated to the Smithsonian by Mr. and Mrs. O. Roy Chalk in 1972 and can be seen on display at the National Museum of Natural History in a platinum and gold ring surrounded by 60 pear-shaped diamonds. According to workers at the Muzo mine in Columbia, it is one of the finest green emeralds ever discovered Care and Cleaning of Emerald Like all precious gemstones, emeralds require proper care to maintain their brilliance …
