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Fine Jewelry University Articles matching: “green gemston”
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Fine Jewelry University (Show All FJU Articles)
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Measuring Gold Weight
…gold because it is heavier. Others say they are both a pound so they weigh the same. Both are wrong. There is more trivia about gold weights. The troy system historically was used for measuring the weight of drugs, precious metals and gemstones. The name comes from the French city of Troyes. The noble metals (gold, silver and platinum) all use the troy system. A troy ounce is 20 pennyweights. The pennyweight was the weight of a silver penny in medieval England. When …
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Types of Jewelry Clasps
… known clasp style. This type of clasp was often made from softer metals like gold or copper and used to fasten necklaces and bracelets. The hook-and-eye clasp was also used by the Greeks and Romans who often embellished them with gemstones and intricate designs. In the 19th century, the development of new metalworking techniques and machinery led to the mass production of jewelry, and the demand for simpler, more affordable clasps grew. This led to the development of the …
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Star White Gold
… clean bright look you bought the jewelry for will be permanent, not just a thin plate. Arden Jewelers’ Star White gold keeps the promise of white gold. The bright clean style of Star White gold will enhance the look of diamonds and gemstones. Star White jewelry will last a very long time with a clean pure white gold look. Your prestigious White jewelry will keep its beauty and enjoyment for a life time. Impressive and treasured jewelry with Star White gold is Arden …
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What to Do When Your Ring Irritates Your Skin
…design. We do custom jewelry design , and one of our favorite projects is to take the raw materials (gold, diamonds, gemstones, etc.) from a client’s existing ring and use them to make a new and exciting creation. We can reuse the diamonds … can begin hours or even days after contact and may last for several weeks. Some people’s skin even turns black or green when they wear certain jewelry. One of the most common metal allergies is Nickel which is added to pure gold in many …
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Gem in the Spotlight: Garnet
… midst of cold, white (valley fog) and at times stark surroundings are rewarded with one of the most varying birth gemstones…Garnet. Garnet’s pizzazz energizes the gloomiest day. Garnet varieties brighten the world in colors of yellow to … garnet lantern to navigate the Ark at night. The ancient world is full of praise for the carbuncle, the glowing red gemstone we now know as garnet. Early scientists named garnet from the Latin granatus, which means ‘seedlike’ because garnet…
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Gem in the Spotlight: Opal
… same stone). Gemology of Opal Opal’s captivating dance of colors is a result of its unique internal structure. This gemstone is composed of tiny silica spheres arranged in a pattern, which diffract light and create the spectacular play of … opal”. Opal has a refractive index of 1.37 – 1.47 and a Mohs hardness of 5.5-6. This makes it one of the softest gemstones commonly used in jewelry. For reference, here are the Mohs hardness values for some other gemstones you may know: …
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Gem in the Spotlight: Sapphire
… her spouse had been unfaithful. Sapphire refused to shine when worn by the wicked or impure. Known as the celestial gemstone, the sapphire has been treasured for thousands of years. Known as the celestial gemstone, the sapphire has been …, which measures 10 on the Mohs scale, sapphire and ruby (9 on the Mohs scale) are the toughest and most durable gemstones. This toughness makes the sapphire a long lasting piece of jewelry as well as a useful industrial tool. One last …
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Fake Diamonds: The Great Diamond Attack
… that are naturally lower color and making them more colorless. Next they can take a diamond and make them have intense colors. The colors they are making are somewhat unusual for the diamond trade. The common colors are a bright green and yellow/orange stones. Some call the colors antifreeze looking. Is this process a simple treatment of a natural stone or is it the manufacturing of a diamond using some natural elements? Regardless of way the industry calls it, I feel …
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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 … then 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 …. Brown zircons can be transformed into colorless or blue zircons through heat treatments. Zircon is a durable gemstone with good hardness on the Mohs scale (6 to 7.5). However, Zircon has what is known as indistinct cleavage which creates …
