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Fine Jewelry University Articles matching: “Light blue stone”
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Gem in the Spotlight: Blue Zircon
Zircon may be last in the alphabet of gemstones, but it is first in sparkle. The crystal structure of zircon creates one of the liveliest displays found in any … other colored gems? Zircon has a high refractive index (1.92-2.01). The refractive index (abbreviated RI) of a gemstone is its optical property that refers to the ratio of the speed of light in a vacuum to the speed of light through a … hues like a rainbow. Then the rainbow effect is broken and focused by the facets of the gem to create the brilliant light show we see. Zircon is also of interest to geologists because it is one of the oldest minerals on earth. In the gem …
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The Magic of Polarized Light
We use polarized light on a daily basis when we put on our sunglasses, turn on our TV, or sit down at our computer. But, what is polarized … light is actually a very useful tool in gemology, and in this article we’ll show you why. What Is Polarized Light? Light from almost any light source travels in many different directions, and the vibrations around each ray of light are …. In the gemological world, this would be any light source that we use on a regular basis (e.g. overhead reflected light or a daylight equivalent fluorescent light source). Polarized light, on the other hand, has all of the vibrations and …
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Gem in the Spotlight: Topaz
…). Smokey Topaz: Brownish grey color. Blue Topaz: The most common color. A full range of shades is available from light Sky Blue to dark London Blue. Topaz is also found in less commonly known colors like green, pink, and purple. Imperial … a nuclear reactor to produce the London Blue Topaz. An electron bombardment in a linear accelerator results in the light Sky Blue Topaz. If both treatments are used, they produce Swiss Blue Topaz. Determining where one color ends and the …
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Gem in the Spotlight: Alexandrite
… known around the world as one of the most sought-after gems for the better part of 200 years. But, what makes this stone so special? Gemology of Alexandrite Alexandrite is the extremely rare, color-change variety of a gem species called … appears bluish-green in daylight, fluorescent light, and some LED light. Under incandescent light, candle, and firelight, alexandrite appears purplish-red. This is because of how the trace element chromium interacts with alexandrite’s …
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Gem in the Spotlight: Iolite
Iolite is maybe not the first gemstone people think of for their blue-violet jewelry, but it should be near the top of the list. Iolite’s color range of … popular gems, iolite cannot be heat treated to enhance its color. The color you see is the natural color of the stone when it was first discovered. This adds value to many gem buyers who don’t want a treated gemstone. Color Me Impressed … in which a substance appears to be different colors when observed at different angles, especially with polarized light. Pleochroism is caused by differing absorption of light rays in doubly refractive crystals. Thus, no singly refractive …
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Gem in the Spotlight: Sapphire
… whose reflection gave the sky its color. Ancient priests and sorcerers honored sapphire above all gems, for this stone enabled them to interpret oracles and foretell the future. Symbolizing truth, sincerity and tradition, it has been said… Moses received the Ten Commandments they rested on tablets of sapphires. Marriage partners put great faith in the stone. If its luster dimmed, one knew his or her spouse had been unfaithful. Sapphire refused to shine when worn by the …
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Gem in the Spotlight: Aquamarine
… to banishing fears and phobias. Aquamarine is a universal symbol of youth, hope, and health. In ancient times, the stone was said to aid seafarers. Sailors often wore amulets of aquamarine to give them courage and tame the ocean waves. …friends.” Another saying is, “to wear aquamarine earrings brings love and affection.” Aquamarine as a precious stone has always been popular. In ancient times, the aquamarine was believed to instill courage in those who wore them. Ancient…
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Diamond Buying Guide: The 4 C’s
…in comparison to each other. 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 … different facet patterns. When you are choosing a diamond shape, keep in mind that different shapes have different light properties. Some shapes, like round, are especially good at returning light to the viewer which makes them sparkle …
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Gem in the Spotlight: Tanzanite
Beauty and rarity are two wonderful traits in a gemstone. Tanzanite has them both. In fact, it is estimated that Tanzanite is 1,000 times rarer than diamond. But, what makes… majority (current estimates are around 95%) of tanzanite is heat treated to help bring out the vibrant blues. The stones that haven’t been heated by humans were heated through natural effects while they were still underground. Without … isn’t heated and is still pretty enough for jewelry displays trichroism. Trichroism is an effect that causes gemstones to display different colors when viewed at different angles. Tanzanite in its raw form has three colors: blue, purple, …
