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Fine Jewelry University Articles matching: “Gold black gem ring”
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Fine Jewelry University (Show All FJU Articles)
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Gem in the Spotlight: Alexandrite
… component, the stone will appear redder. Alexandrite has a refractive index of 1.746-1.755 with an average birefringence of .010. It has a specific gravity of 3.73 and a Mohs hardness of 8.5. Because of its high hardness, alexandrite is … alexandrite’s tremendous value and rarity, it is recommended to be worn carefully or put in jewelry such as earrings or pendants that are less prone to impacts than rings, for example. Alexandrite isn’t the only stone to display color-…
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What to Do When Your Ring Irritates Your Skin
… which 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 … a simple discoloration on top of the skin from the metal. Also, tarnish from silver jewelry can rub off and leave a blackish residue. In both cases, the color will easily wipe or wash off. You can avoid this type of discoloration simply …
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The Birthstones
…, Garnet. Garnet’s pizzazz energizes the gloomiest day. Garnet varieties brighten the world in colors of yellow to gold, bright orange to true orange, brown to cinnamon, pinks to greens, and of course many shades of red. Garnets are given…lore surrounding garnets is that it protects the wearer from nightmares, promotes long-lasting love, and prevents hearing difficulties. Learn more about Garnet and Tasvorite Garnet February’s Birthstone: Amethyst Amethyst, transparent …
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How to Tell If a Diamond Is Natural or Lab Grown
… and GIA (the Gemological Institute of America) have developed even more complex and sophisticated machines for answering this question. They have imaginative names like DiamondCheck, DiamondSure, and DiamondView. Roughly speaking, these …best indicators of whether a diamond is lab grown is whether or not it is a Type IIa diamond. Type IIa is actually a gemological variant of the diamond that relates to how pure the carbon is that makes up the diamond. In nature, less …
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Jewelry Repair FAQ
… you have a question that you don’t see answered here, please contact us and let us know. A gemstone fell out of my ring. Will the new stone match the old one? We get this question all the time. People want their jewelry to look just the … becomes at risk of falling out of the mounting. Retipping is the process of adding a small amount of metal (usually gold or platinum) to the top of worn down prongs to keep the gemstone secure. In the past, almost all gemstones had to …
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Measuring Gold Weight
The old riddle goes: what weighs more a pound of feathers or a pound of gold? Some say gold because it is heavier. Others say they are both a pound so they weigh the same. Both are wrong. How …Tradition. Gold is not weighed in the ordinary weights. Gold is weighed in the troy measurement system. One ounce of gold is not the same as the ordinary ounce (really called avoirdupois ounce). The best way to understand this is to …. An avoirdupois ounce converts to 28.34 grams approximately. The troy ounce is 31.1 approximately. You say, “Aha! Gold weigh more, so a pound of gold weighs more than a pound of feathers.” Unfortunately there is one more piece of the …
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How to Value Inherited Jewelry
…No value is added for style, condition, brand, market demand, or other factors. One quick warning, many “cash for gold” businesses do not pay for the gems. So, their offer can be significantly lower than even the intrinsic value of a …Intrinsic diamond and gem prices are not readily available like precious metal prices are to the general public. The gold, platinum, and silver prices are well publicized. The diamond and gem wholesale trade keeps their prices …
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Frequently Asked Question about Jewelry
… professionals must keep up with current advancements in the field. The pace of change in the gem industry is staggering. What is Moissanite? Moissanite is lab-created silicon carbide. It has become an excellent diamond imitation since it…. What is redesigned jewelry or redesigned? Simply put, a redesign is a custom design using your existing gems and gold or platinum. This does not mean you are limited by the gems you have, but what you have is incorporated into the new …
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How Are Lab Grown Diamonds Made?
… the imagination of scientists and visionaries alike. Just like the alchemists of old who sought to turn lead into gold, many have tried to achieve this impressive feat. We have only recently been able to produce gem quality, lab grown … formation are naturally found. We see diamonds closer to the surface of the earth when a rare type of deep volcano brings them up to where humans can find and mine them. The first successful synthetic diamonds were made by mimicking …
