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Fine Jewelry University Articles matching: “green emerald”

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Fine Jewelry University (Show All FJU Articles)

  1. Nickel in jewelry can cause allergic reactions

    What to Do When Your Ring Irritates Your Skin

    … 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 … necessarily allergies. For example, copper or metals that contain copper (like bronze) can cause the skin to turn green where the metal comes in contact with it. This isn’t an allergic reaction but a simple discoloration on top of the …

  2. Collection of sapphire jewelry and loose sapphire gemstones in many colors

    Gem in the Spotlight: Sapphire

    … stone’s color is used before the word sapphire. Sapphire, a variety of corundum, comes in all colors except red (the red variety being known as ruby), but is especially popular in deep blue. Fancy colored sapphires including pink, green, orange, and golden yellow are magnificent in any jewelry. See More on Etsy › With the exception of the diamond, which measures 10 on the Mohs scale, sapphire and ruby (9 on the Mohs scale) are the toughest and most durable gemstones. …

  3. The 4 Cs of Diamonds

    Diamond Buying Guide: The 4 C’s

    … 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 more than other shapes. The emerald cut, for example, gives a classic look with big flashes of light but very little sparkle or fire. Ultimately, it’s up to you to pick the shape that you like best. The second component to diamond cut is the way the facets are positioned…

  4. Beautiful iolite jewelry and loose gemstones

    Gem in the Spotlight: Iolite

    … natural color of the stone when it was first discovered. Coming in at 7 to 7.5 on the Mohs hardness scale, iolite is a somewhat soft gem. It is comparable to quartz (Amethyst, Citrine, etc), a little harder than Opal, and softer than Emerald or Topaz. Because of this, some extra care should be taken with your iolite jewelry. Try to avoid wearing it in situations where it might be hit against hard objects to keep it free from cracks and small chips. Iolite is a fairly …

  5. 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 …

  6. Blue Zircon loose gems and jewelry

    Gem in the Spotlight: Blue Zircon

    …, and flashes of color or fire just like diamond. Zircon also is known for its variety of colors. Blue zircon is the most popular color. But, zircon can be almost any color you can imagine including red, yellow, orange, brown, green, champagne, golden, saffron, and colorless. Zircon colors are pure and have that distinctive fire that sets it apart from other gems. The Gemology of Zircon Why does zircon have so much more fire then other colored gems? Zircon has a high …

  7. Group of loose spinel gemstones with finished jewelry

    Gem in the Spotlight: Spinel

    … and pendants are suitable for daily wear. Spinel can come in virtually any color of the rainbow which is one of the reasons why the August birthstone change is so exciting. Before, August babies were left with only the vibrant green of peridot, but now the entire color pallet has been opened up. Spinel is arguably the most overlooked and underappreciated gemstone of all time. Spinel was first made in a lab over 100 years ago when scientists who were trying to synthesize…

  8. Retipping is an important jewelry repair technique

    Jewelry Repair FAQ

    …is mixed with pure gold to create white gold. In truth, even a high percentage of silver content will not result in a white gold alloy. Silver is actually used in 14k yellow gold and a higher percentage of silver is often used to make green gold. So if it isn’t silver, what metal do they use? Most commonly, nickle is used to make white gold. However, since many people are allergic to nickle , palladium (a member of the platinum family of metals) is being used more and …

  9. Single white round pearl on white background

    Gem in the Spotlight: Pearl

    … from their saltier cousins. Tahitian Pearls: Also known as black pearls, Tahitian pearls are a type of saltwater pearl that are grown primarily in French Polynesia. They are known for their dark, rich colors, which range from dark green and gray to deep shades of blue and black. Tahitian pearls are generally large with an average size of 9mm to 18mm, and they commonly have baroque or irregular shapes. South Sea Pearls: Only a small percentage of oysters are able to …