Search Results
Fine Jewelry University Articles matching: “ccc mean”
Showing only FJU Article results. Click here to show all results.
Fine Jewelry University (Show All FJU Articles)
-
Gem in the Spotlight: Pearl
… taken as a whole when purchasing pearls. It is important to consider all of them to ensure that you are properly valuing a pearl or strand of pearls. Care and Cleaning of Pearls Unlike most gems, pearls are an organic creation which means that they require a little extra care to continue looking their best. With a Mohs hardness of 2.5, pearls are among the softest (most easily scratched) materials commonly used in jewelry. Follow these simple rules to help your pearls …
-
Learn Secret Diamond Buying Skills From a Professional Diamond Buyer
… enough for color grading. How can you to overcome the color assessment problem? Judging diamond color is actually looking for the absence of color or transparency (except in fancy color diamonds). A letter grade starting with “D” means totally transparent. The scale then moves down the alphabet to the next level of less transparency color. D to F are colorless grades, G-J are near colorless, K-M faint yellow on down the scale to more inner color. Colorless is also …
-
Diamond Brokering
… of the diamond Years of expertise as a diamond buyer and wholesale seller Finding our clients the best value drives us. Our brokerage has links to hundreds of diamond importers, wholesalers, dealers and traders. We use high-tech means to reach the most sophisticated companies and low-tech to mine even one person operations all with the goal of finding the exact diamond you want at the very best price available. Our value hunting system helps with: Locating the most …
-
Gem in the Spotlight: Alexandrite
…, alexandrite appears purplish-red. This is because of how the trace element chromium interacts with alexandrite’s crystal structure. It absorbs most wavelengths of light very well, only transmitting green and red light. This means that depending on the light source the stone will reflect more of the accent colors of light. Since fluorescent light has a stronger greenish-blue component, the stone appears greener. Under candlelight, which has a much stronger red/orange …
-
Gem in the Spotlight: Iolite
…, but iolite has a rich, unique color and great gem value on its side. It is more subtlety nuanced than amethyst and deeper than many tanzanites. Iolite’s name comes from its violet color. It is from the Greek word “ios” meaning violet. Unlike many other 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. …
-
What to Do When Your Ring Irritates Your Skin
… to irritate someone after years of problem free wear. A change in diet, again, could also lead to irritation due to a change in the skin’s chemical composition. Adding to the confusion, metal allergies can develop at any age. This means that even if nothing changed it is possible to suddenly become allergic to jewelry that you have been wearing trouble free for many years. and reactions to metals can begin hours to days after contact and may last for several weeks. …
-
Caring for and Cleaning Your Jewelry
… from touching one another when you wear or store them. Diamonds are crystals that grow with a cleavage plane. This means a sharp blow on a vulnerable spot can chip or break the stone. This does not mean that diamonds are not very durable…
-
Gem in the Spotlight: Ruby
…precious stones” in the ancient language of Sanskrit. Rubies get their name from the Latin word “ruber,” which means red. This is also where rubellite tourmaline (the red variety of tourmaline) gets its name. Pliny the Elder mentioned …
-
Jewelry Repair FAQ
… containing chemically bound gold molecules and then using electricity to adhere those molecules to the jewelry’s surface. Molecules are the key to understanding gold plating. The amount of gold used is on the molecular level. This means that only a very thin layer of gold covers the surface. Gold plating produces a layer of gold around 0.5 microns thick. A micron is roughly equal to 4/100,000 or 0.00004 inches. Gold plated jewelry is often indicated with a “GP” marking…
