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Fine Jewelry University Articles matching: “Star of sapphire”
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Fine Jewelry University (Show All FJU Articles)
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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 …so it is not surprising that amethyst has been 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…
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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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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 …. Opal is the traditional birthstone for those lucky enough to born in October, and it is found in a huge variety of colors (sometimes all within the same stone). Gemology of Opal Opal’s captivating dance of colors is a result of its …
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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…derives its name from the Latin which literally means “seawater,” a tribute to its beautiful blue color. As a member of the beryl family, Aquamarine has some illustrious cousins in addition to a rich history of its own. The Mythology of…
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Gem in the Spotlight: Topaz
… difficult it is to scratch something. For reference, topaz is a bit softer than diamond which is a 10 and corundum (sapphire/ruby) which is a 9 on the scale. It is a bit harder than emerald at 7.5-8 and quartz which comes in at 7. Here are …unseen by enemies. In the Victorian era, blue topaz signified faithfulness and love. Gemology As we mentioned at the start of the article, topaz comes in a huge variety of colors. Some of these varieties have their own names: Imperial …
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Art Deco vs. Art Nouveau Style Jewelry
…. Precious metals like platinum and white gold alongside rare and valuable gemstones such as diamonds, emeralds, and sapphires, were the materials of choice for Art Deco jewelry makers. The most prevalent diamond cut found in Art Deco jewelry… which led to very different expressions in jewelry. Once you learn about the fundamental styles of each, you will start to see their influence everywhere. They are also important guide posts that can aid in dating vintage and antique …
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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 … is to create an environment of extremely high pressure and temperature where diamond growth can occur. Each process starts with a small diamond seed which is placed in carbon and put under very high pressure and temperature to grow the …
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Gem in the Spotlight: Tsavorite Garnet
… jewelry world. Here was a gem with the color to rival the most exquisite emeralds and the clarity of the cleanest sapphires, all with the time tested durability of garnet. Tsavorite is a unique form of garnet with a stunningly vivid green … times rarer than the much better known Emerald. Gemology Tsavorite’s rarity and beautiful green color reminds one of the other green garnet called Demantoid. Demantoid, however, is a completely different variety of garnet found …
