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Fine Jewelry University Articles matching: “Crystal opal”
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Gem in the Spotlight: Opal
…, rich body color enhances the brilliance of the opalescent play of colors creating a mesmerizing visual display. Crystal Opal : Renowned for its transparency and the multilayered symphony of colors it exhibits, crystal opal is a rare and …. Ethiopian Opal: Technically this refers to any opal from Ethiopia. That said, the term is usually used to refer to crystal opal that has a slight yellowish to orange body color. Many Ethiopian opals are hydrophane (see above). Other names for …
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What Are Lab Grown Diamonds?
… the gemological world, synthetic is a highly technical term. When speaking technically, synthetic gems are man-made crystals with the same crystal structure and chemical composition as the specific gem that is being created. Therefore, a “…, it helps to understand a little bit about how lab grown diamonds are made. There are two techniques to grow single crystal diamonds. The first and oldest is the High Pressure High Temperature (HPHT) technique. This process starts with a …
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Gem in the Spotlight: Tourmaline
…from vanadium. Watermelon: This variant of tourmaline has a pink center and green edges that resembles a watermelon. Crystals of this type are often cut in slices to display this unique property. One of tourmaline’s most distinctive traits …energies, communication, and the ability to relax. In the 18 th century, a Dutch scientist claimed that a tourmaline crystal wrapped in silk and placed on the cheek of a feverish child would help them fall asleep. The gem was also highly …
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Gem in the Spotlight: Quartz
… with surprising variety. 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 … gems. Quartz seems to have more than its fair share of misnomers. One famous one is “Alaska Diamond” for rock crystal alongside “Herkimer Diamonds” (see below). In recent times, the term “Green Amethyst,” which was commonly used for …
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Fake Diamonds: The Great Diamond Attack
…. Synthetic is one of those words. Synthetic, in the gem world, means made of the same chemicals (elements) and crystal design as nature but is man made. So, a synthetic diamond is the same chemistry (carbon element) and crystal structure (… and have for many years now. Most are used in the manufacturing of tools like diamond tip drills. Synthetic diamond crystal big and pretty enough for jewelry has been made since the 1950’s. But, it just costs too much to justify using them…
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The Birthstones
… during sunset. Sapphire symbolized truth, sincerity and tradition. Learn more about Sapphire October’s Birthstone: Opal (Tourmaline) The opal has been described as containing the wonders of the sky’s sparkling rainbows, fireworks, … fire of the ruby, the rich purple of the amethyst, the sea-green of the emerald. Opal‘s lore is as colorful as the opal itself. The ancient Greeks felt that the opal gave foresight and the gift of prophecy to the wearer. The Romans …
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Synthetic Gems: The Whole Story
… trained and equipped gemologist to detect. But if you had gem material that is the same chemically, optically and crystal structure as a natural gem, it would be very hard to tell them apart. In gemology we call this a synthetic gem. … bad, fakes, or the curse of a modern society. So a man made synthetic ruby has the same exact chemical formula and crystal structure and optical characteristics as a natural ruby. How can a person tell them apart? I will tell you it is very…
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The History of Diamond Cuts
… shape. So, the Romans wore uncut diamonds. One of diamond’s remarkable attributes is that the natural diamond crystal is beautiful without any human modification. Diamonds normally form in the octahedral shape which looks like two pyramids … center facet of a diamond. The creative name for this shape is the Table Cut. By adding more facets to the diamond crystal the single cut diamond was born. The Single Cut diamond is one of the earliest and most basic of cuts. It has an …
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Gem in the Spotlight: Emerald
… their rich green color. The intensity of an emerald’s hue depends on the presence 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 …garden) because they look like moss or a garden inside of the stone. These inclusions are tiny fissures, bubbles, or crystals that are visible to the naked eye. These inclusions are not necessarily considered flaws but rather add character …
