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Fine Jewelry University Articles matching: “crown mark”

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Fine Jewelry University (Show All FJU Articles)

  1. Purple peace sign

    How to Sell Jewelry on Craigslist and Facebook Marketplace

    Selling jewelry on Craigslist, Facebook Marketplace, and other online local classified sites is a great way to get cash for your jewelry, but there are some …’t have a way to meet the potential buyer at a public place, then do not sell your jewelry through the Craigslist or Marketplace. The buyer’s bank is a good public location because if they wish to buy the jewelry they can go and get the … method. Checks of all kinds (personal, cashiers checks, money orders, etc.) can be fakes. If you are on Facebook Marketplace, check the profile of the potential buyer. Is it a brand new profile with an obviously generic or fake image? …

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

    Gem in the Spotlight: Sapphire

    …. It is also considered a booster for the immune system, protecting the body in general from disease. The British Crown Jewels Collection contains several sapphires. One of them, the Saint Edward’s Sapphire, is a large sapphire set in the … the Abbot of Westminster to the Royal British Treasury. The famous sapphire remains there, decorating the Imperial Crown ordered by Queen Victoria. Deriving its name from the Greek word for blue, sapphire used to refer to any blue stone. …

  3. Understanding the Diamond Buying Game

    … two could be a very poor cut (68%). Another way is both can have a 61.5% depth but diamond one has the correct crown to pavilion proportion and diamond two has a very deep pavilion and extremely thin crown. Other ways are how thick the … with the same standard. GIA and AGS use the most technical standards. EGL uses a looser grading standard, I call market grading. In addition, EGL has a franchise like business model and different EGL labs grade wildly different. Some …

  4. Old mine cut diamond example

    The History of Diamond Cuts

    … earliest and most basic of cuts. It has an octagonal girdle (the side edge of the diamond) with a table and eight crown (top part of the diamond) facets plus eight pavilion (the bottom part of the diamond) facets plus a culet (the point … to 24 facets coming to a point in the middle. But its most recognized aspect is the flat bottom. Basically, it is a crown without a pavilion. Interesting fact #2: Some diamond cuts do not have a standard number of facets. As we have just …

  5. Group of loose topaz gems and topaz jewelry

    Gem in the Spotlight: Topaz

    … to be the largest diamond ever found (prior to the Cullinan Diamond) at 1,680 carats and was set in the Portuguese crown jewels as such. It wasn’t until many years later that more modern testing identified it as a clear topaz instead. …

  6. Retipping is an important jewelry repair technique

    Jewelry Repair FAQ

    … 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 stamped somewhere on the piece. Heavy Gold Electroplating is gold plating with a minimum thickness of 2.5 microns. Look for an “HGE” stamped on the jewelry to indicate that it is Heavy Gold Electroplated. On the other hand, gold …

  7. Alternative metal wedding band options for men

    Alternative Metals for Men’s Jewelry

    … silver-white in color, but it can be treated to different colors. Titanium is very light weight which is its hallmark feature and one of the reasons it is used so heavily in manufacturing. It resists scratching well, and it is both …, it is difficult and expensive to resize, repair, or engrave aircraft grade titanium rings, again because of the remarkable properties of the alloy. This may or may not be an issue for you depending on who you buy your titanium ring from…

  8. Frequently Asked Question about Jewelry

    …is changing the very nature of diamonds. First, new synthetic (man made) diamonds of gem quality are coming into the market now. Next, companies can now change the color of diamonds. They are making the diamonds both more transparent (… diamond. Color is actually looking for the absence of color or transparency. Clarity is inclusions and natural birthmarks of a diamond and is useful as identifying characteristics. For more information see the Diamond Buying Guide . What…

  9. A computer rendering of a fake diamond

    Fake Diamonds: The Great Diamond Attack

    … to justify using them. The technology is becoming more cost effective, and some synthetic diamonds are entering the market place now. Since they are the same chemistry as natural diamond, there is no easy test to use to separate them … diamond suppliers have sophisticated equipment in place to help them catch these impostors before they reach the marketplace. If you’re interested you can learn more about how to tell if a diamond is lab grown . Synthetic gems are not …