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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
… organizations that are upfront about their products. Some even laser inscribe all of their diamonds to clearly mark them as lab grown. The Type IIa Test That said, we would still like to be able to tell if a diamond is natural or lab …Also, a diamond has to be completely loose (unmounted) to perform the test. Photoluminescence Spectroscopy and UV Radiation Going beyond the Type IIa test, more advanced equipment exists that uses spectroscopic techniques to analyze …
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The History of Diamond Cuts
… but did not have the technology to change their shape. So, the Romans wore uncut diamonds. One of diamond’s remarkable attributes is that the natural diamond crystal is beautiful without any human modification. Diamonds normally form in … or almost the same diamond cut can be known by different names. This is done in the modern era is for branding and marketing reasons to increase the perceived value of the diamond. In historical times, it was most likely for national and…
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How to Sell Your Jewelry
… service for a fee. Think of a jewelry broker as a hired professional working for you against a very sophisticated market like the jewelry industry. Make sure their allegiance is to you alone. Most jewelry brokers are highly trained in … of jewelry. Also realize that the prices asked for in the paper are rarely achieved and do not reveal the true market value. Some times the jewelry is sold for very much less then advertised or never sold at all. But with some safeguards…
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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…
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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…
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Understanding the Diamond Buying Game
… 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 … four C’s of diamonds are not that old, less than 100 years. Before that system every business and diamond seller had their own system. It was impossible to buy a diamond without seeing it first. The GIA four C system is supposed to be …
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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 …
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Gem in the Spotlight: Aquamarine
…, 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…a tribute to its beautiful blue color. As a member of the beryl family, Aquamarine has some illustrious cousins in addition to a rich history of its own. The Mythology of Aquamarine Long associated with tranquility and happiness, …
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Jewelry Repair FAQ
…. 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…the prongs wear down too much, the stone 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. …
