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Fine Jewelry University Articles matching: “Manufacturers mark”
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Fine Jewelry University (Show All FJU Articles)
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How to Tell If a Diamond Is Natural or Lab Grown
… diamonds that are sold as natural diamonds. But, it is important to know that the majority of lab grown diamond manufacturers are perfectly legitimate and honest organizations that are upfront about their products. Some even laser inscribe all of… recently added to our own gem lab. This incredible machine is used by some of the world’s top gem labs and jewelry manufacturers daily, and it has already helped us catch undisclosed lab grown diamonds. It does not suffer from many of the …
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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? …
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The Difference Between White Gold and Platinum
…ruthenium is often used as a hardener alloy. Platinum is usually marked with .900 or .950 to mark its fineness. Some manufacturers state what alloy they are using like 90% Platinum 10% Iridium. How white gold and platinum start out is one of the …
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Star White Gold
…. Regular, Plus, or Premium? The White Gold Task Force statement on the plating of white gold reveals how jewelry manufacturers view rhodium plating: “The lack of an industry-accepted definition of white as applied to white gold has been a problem… only see white gold with the plating on it and assume that is its true color. Most of them don’t know that jewelry manufacturers choose the white gold alloy mix. It is much cheaper to use the standard white gold alloy (again standard is the …
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Gem in the Spotlight: Tanzanite
… amount of blue in a tanzanite is caused by the quantity of vanadium present. Raw, unheated tanzanite is sometimes marketed as “mermaid tanzanite” because of the iridescent blue and green colors. You can usually tell if a tanzanite has …VP of Tiffany & Co. at the time, who named the stone tanzanite after the country of origin. Tiffany then started marketing the stone around 1968. The geological conditions required to form tanzanite are quite rare, leading some …
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Gem in the Spotlight: Pearl
…. Natural pearls grow in the wild without human intervention. They are very rare, and most natural pearls on the market today are antique. They can take years, even decades, to form, and are found only in a few select locations around the… who believed it to be a talisman of good luck. Types of Pearls There is a huge variety of pearls available on the market today. This section will give you just a small sampling of the different kinds of pearls that you may run into. …
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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 …
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Gem in the Spotlight: Aquamarine
…’s main pigment comes from iron. The color spectrum of aquamarine varies from very pale blue to a deep blue, the finest specimens being the deepest in color. Most aquamarine stones have a subtle green component, and in some markets, a deep greenish blue is the most desirable. Brazil is the most prolific supplier of aquamarine where it is often found in shades of blue-green. Aquamarine has a refractive index of 1.577 to 1.583 and is doubly refractive. Aquamarine’s …
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Gold Purity and The Differences Between White and Yellow Gold
…with gold. A plated piece of jewelry has a thin layer of gold over a base or non gold metal. Some plated jewelry has markings that look like real solid gold. For example, a plated piece can be stamped: 14k HGE or 18k GE. HGE means …. You can learn more about gold plating on our FAQ page. Sometimes engagement rings are stamped 14KP. The 14KP is a marking for plum gold which is a true mix of 14 karat gold. Some governments allow 13.5k to be stamped 14k so the 14KP …
